The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible...
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Transcript of The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible...
![Page 1: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/1.jpg)
The Power of Decimals
1
![Page 2: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/2.jpg)
Instructions:1)Read each slide carefully. Remember, you
are responsible for this information!2)If you wish to go back, click the back arrow3)Answer the questions at the end of each
section. This will allow you to move on to the next question
4)Have fun!
2
Introduction
![Page 3: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/3.jpg)
Introduction to decimals
3
Decimals are used to show PART of a whole number
Partial numbers fall to the right of the DECIMAL POINT 1.5
Whole number
Partial number
![Page 4: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/4.jpg)
Place names
4
2.89
The farther right the decimal place, the smaller size.
See labels below
Ones (small)
Hundreths (smallest)Tenths
(smaller)
![Page 5: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/5.jpg)
Fractions and Decimals
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All fractions can be converted into decimals(Some look messier than others.)
Examples
½= 0.5 1/10= 0.1
1/4= 0.25
1/7= 0.14285
![Page 6: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/6.jpg)
2.63Which number is in the hundredths place ?
1.22.33.64.0
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Question 1
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Remember: The farther right, the smaller the number
Try again
7
Incorrect
![Page 8: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/8.jpg)
Exactly! 3 is the hundredths place. It has the smallest value because it is farthest right
Click here to continue
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Correct!
![Page 9: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/9.jpg)
To put decimals in numerical order:
Work left to right!!Once you find the higher number, stop!
Example
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Ordering decimals
same same
Bigger! Stop!
Smaller! Stop!
Not needed
![Page 10: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/10.jpg)
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Ordering decimals
![Page 11: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/11.jpg)
1. 2.392. 2.483. 2.474. 2.365. 2.43890798698
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Which number is bigger?
![Page 12: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/12.jpg)
Remember, work left to right. Click here to double check the slide.
Try again?
12
Incorrect
![Page 13: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/13.jpg)
Exactly. 2.48 is the largest of the numbers
Click here for Question 2
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Correct!
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A. 8B. 8.1
C. 8.15D. 8.155
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Which number is smaller?
![Page 15: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/15.jpg)
If no decimal is present, it is the same as zero.
Click here to try again
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Sorry, not quite!
![Page 16: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/16.jpg)
Since the first numbers are the same, 8 is the smallest because it has no decimals
Click here to continue
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Exactly!
![Page 17: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/17.jpg)
Rounding is changing decimals into whole number This helps for easy adding and subtracting estimates Examples:
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Rounding
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How do I know which way to round?
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Easy Rule0.5 and above= Round up
0.49 and below= Round down
![Page 19: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/19.jpg)
Why bother rounding?
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Rounding helps make adding and subtracting easier.
Example:3.41+7.82=?3.41 rounds down to 3
7.82 rounds up to 8
3+8=11 (much easier)
![Page 20: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/20.jpg)
Round the numbers in this equation and estimate the answer
2.76+7.11=?A. About 9B. About 10C. About 11D. About 7
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Rounding Practice
![Page 21: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/21.jpg)
-Remember the Easy Rule: 0.5 and above= Round Up
0.49 and below = Round Down
Try Again
21
Nope, try again
![Page 22: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/22.jpg)
2.76 rounds up to 3 7.11 rounds down to 7 7+3= about 10!
Click here to continue
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Exactly!
![Page 23: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/23.jpg)
Adding and Subtracting Decimals
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Decimals add together just like whole number.Two things to remember:
1.Make sure the decimals line up2.If no decimal is present in one
number, add a zero
Click to see examples
![Page 24: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/24.jpg)
Adding and Subtracting Examples
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3.45+2.9=?
3.4 5 2.9 +
3 .74
3.45+2.9=?
3.4 5 2.9 0 +
6.35
![Page 25: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/25.jpg)
Adding and Subtracting Examples
25
8 - 4.39=?
4.39 8 -
4.31
8 - 4.39= ?
8.00 4.39 -
3.61
![Page 26: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/26.jpg)
What is the sum of 4.38 + 2.8 (use paper and pencil if needed)
A. 7.28B. 6C. 4.66D. 7.18
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Practice!
![Page 27: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/27.jpg)
Try again. Click here if you would like to view the slides again.
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Nice try, bye-bye…
![Page 28: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/28.jpg)
Well done! You lined up the decimals and used a zero when needed.
Click here to continue
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Correct!!
![Page 29: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/29.jpg)
What is the difference of 9.78-5.1=?A. 4.38B. 9.27C. 9.28D. 4.68
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Subtraction practice!
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Remember to add zeros when needed.
Click here to try again…
30
Nope
Bah, Humbug!
![Page 31: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/31.jpg)
Well done, you have the hang out this
Click here to continue
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You’re doing great!
![Page 32: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/32.jpg)
Metric System
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Decimals help us understand the metric system
Large measurements can be made smaller with decimals
This helps measure smaller items (and people!)
![Page 33: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/33.jpg)
1/100 of a meter (or 0.01)
Good for measuring small distances (like the length of your computer screen)
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Distance Measuring
100 centimeters Good for measuring
long distances (like the distance between countries!
![Page 34: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/34.jpg)
1000 grams Good for measuring
large masses (like an elephant)
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Mass Measuring
1/1000 of a kilogram (or 0.001)
Good for measuring small masses (like this rat)
![Page 35: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/35.jpg)
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Volume Measuring
1000 mililiters Large liquid amounts This bottle is a 2 liter
bottle
1/1000 of a liter (0.001 liters)
Good for small liquids Found in science a lot
![Page 36: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/36.jpg)
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Units
10000.010.001
These can be applied to ANY measurement! (i.e. Kilograms, Centiliters, kiloliters etc)
![Page 37: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/37.jpg)
What would I most likely use to measure the mass of a house?
A.GramsB.LitersC.KilogramsD.Meters
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Quiz time!
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Not quite, remember “mili” means 0.001 (smaller)
“Kilo” means 1000 (larger)
Click here to try again!38
Not quite…
![Page 39: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/39.jpg)
Good job, you’re really doing well!
Click here to continue
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Exactly!!!
![Page 40: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/40.jpg)
What would you use liters to measure?
1)The mass of your little brother2)The volume of a swimming pool3)The distance from your house to Central4)The volume of a juice box
40
Just two more questions!
![Page 41: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/41.jpg)
Click here to review the slides about volume.
(If you need to look closer at the slides, remember, you can always click the “back” arrow before answering questions.)
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Incorrect
![Page 42: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/42.jpg)
Liters would work for a swimming pool! Liters would not work well for a juice box. Milliliters are smaller and would work a lot
better
Continue!
42
You’re right!
![Page 43: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/43.jpg)
You are planning on driving to New York this week. How would you measure the distance to see how much gas you will need? (remember the slide on units)
A. LitersB. CentimetersC. MetersD. Kilometers
43
Final Question!
![Page 44: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/44.jpg)
Good guess, it’s a tricky question. Remember that units (Kilo, mili and centi) can apply to ANY type of measuring.
Click here to try again
44
Incorrect
![Page 45: The Power of Decimals 1. Instructions: 1)Read each slide carefully. Remember, you are responsible for this information! 2)If you wish to go back, click.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649f505503460f94c73774/html5/thumbnails/45.jpg)
A Kilometer is 1000 meters. This would work very well in measuring a long distance!
Continue!
45
Exactly!! Good job!
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Almost…
46
You could use meters to measure the distance, but it’s not the best answer.
Remember, it might be something not covered.
Try again
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The End
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Well done! You obviously know your stuff when it comes to decimals and measuring! Good luck on the test, I know you’ll do great!
Click the flag to end the assignment
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Content
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Content
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Content
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Content
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Question slide
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Click here to try again
54
Incorrect
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Correct
55
Continue!
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Question slide
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Click here to try again
57
Incorrect
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Correct
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Continue!
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The End
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