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*K +CO&GE +COC&CNOCVKQPYKVJVGPURQVUâ … · · 2016-04-21Decimal numbers have a decimal point....
Transcript of *K +CO&GE +COC&CNOCVKQPYKVJVGPURQVUâ … · · 2016-04-21Decimal numbers have a decimal point....
Hi... I am Dec.
I am a Dalmation with ten spots!
I would love to learn more about decimals. Will you help me?
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What are decimals?Decimals are parts of whole things.
They are a little like fractions,but we write them in a different way.
Decimal numbers have a decimal point.This separates the whole numbers (on the left)
from the part numbers (on the right).
41219
687409
Decimal Points
Whole Numbers Part Numbers
.
.
.
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Number lines can help usto compare decimals.
0 1 2 3 4 50.3 0.8 ? 2.4 3.2 ? ?
What decimal numbers are the red arrows pointing to?
1.3 1.4 1.5 1.6 1.7 1.81.32 ? 1.47 1.55 ? 1.73 ?
This number line shows units, tenths and hundredths.
The number line below shows units and tenths.
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Adding and subtracting decimals is just like
adding and subtracting whole numbers.
Just remember to line up the decimal points...
... and don’t forget to write the decimal point in your answer!
5 . 63 . 72+
1
5 . 63 . 72+
8 . 732 . 52-
9 . 32 6 . 21?
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A1 A2
A3 A4
What is double1.2?
What is1.5 x 10?
Put these decimalsin order of size
(smallest to largest):3.8, 2.9, 3.1
Round 3.7 to the nearest
whole number.
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A5 A6
A7 A8
What is the value of the tenths digit in
5.9?
Use < or > to compare the size of
these numbers:6.5 4.1
What number is this arrow pointing to?
What is1.4 + 2.3?
0 1?
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A9 A10
A11 A12
What is0.64
written as a percentage?What is
479 ÷ 100?
What is4.8 ÷ 4?
What is0.44
written as a fraction?
Th H T U . t h
3 0 1 5 . 2 7www.teachingpacks.co.uk©
Thou
sand
s
Hun
dred
s
Uni
ts
Tens
Dec
imal
Po
int
Tent
hs
Hun
dred
ths
1. 0.50.6+
2. 0.60.7+
3. 0.30.5+
4. 0.40.9+
5. 0.40.2+
6. 0.70.7+
7. 0.10.5+
8. 0.80.6+
9. 0.70.2+
10. 0.90.8+
11. 0.50.8+
12. 0.60.2+
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Can you add these decimals quickly and accurately?
A
1. 0.50.61.1
+2. 0.6
0.71.3
+3. 0.3
0.50.8
+
4. 0.40.91.3
+5. 0.4
0.20.6
+6. 0.7
0.71.4
+
7. 0.10.50.6
+8. 0.8
0.61.4
+9. 0.7
0.20.9
+
10. 0.90.81.7
+11. 0.5
0.81.3
+12. 0.6
0.20.8
+
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AAnswers
1. 455.12710.40+
2. 173.13219.77+
3. 562.40243.93+
4. 469.4363.61+
5. 458.66423.87+
6. 976.88267.20+
7. 245.61413.10+
8. 710.19250.23+
9. 117.86474.10+
10. 355.07489.79+
11. 862.88825.69+
12. 90.10642.45+
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Can you add these decimals quickly and accurately?
H
1. 455.12710.40
1,165.52+
2. 173.13219.77392.90
+3. 562.40
243.93806.33
+
4. 469.4363.61533.04
+5. 458.66
423.87882.53
+6. 976.88
267.201,244.08+
7. 245.61413.10658.71
+8. 710.19
250.23960.42
+9. 117.86
474.10591.96
+
10. 355.07489.79844.86
+11. 862.88
825.691,688.57+
12. 90.10642.45732.55
+
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HAnswers
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