Splash Screen. Lesson Menu Five-Minute Check (over Lesson 10–5) Main Idea Example 1:Estimate Sums...
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Transcript of Splash Screen. Lesson Menu Five-Minute Check (over Lesson 10–5) Main Idea Example 1:Estimate Sums...
Five-Minute Check (over Lesson 10–5)
Main Idea
Example 1:Estimate Sums
Example 2:Estimate Differences
Example 3:Real-World Example
Example 4:Real-World Example
• I will estimate sums and differences of mixed numbers.
Estimate Sums
Estimate 2 + 3 .46
16
2 46
3 16
+
Estimate 3 + 3 = 6
Answer: So, 2 + 3 is about 6.46
16
1. A
2. B
3. C
4. D0% 0%0%0%
A. 4
B. 5
C. 6
D. 7
Estimate 4 + 1 .23
15
Estimate Differences
Estimate 8 – 3 .38
78
8 38
3 78
–
Estimate 8 – 4 = 4
Answer: So, 8 – 3 is about 4.38
78
1. A
2. B
3. C
4. D0% 0%0%0%
Estimate 9 – 6 .78
18
A. 4
B. 5
C. 6
D. 7
Round each mixed number to the nearest whole number. Then add.
Javier walked 2 miles on Saturday and
1 miles on Sunday. About how many
miles did he walk in all?
610
710
2 610
1 710
+
Estimate 3 + 2 = 5
Answer: So, Javier walked about 5 miles.
1. A
2. B
3. C
4. D0% 0%0%0%
Clairese walked for 1 hours on Friday and
2 hours on Sunday. About how many
hours did she walk in all?
45
15
A. about 1 hour
B. about 2 hours
C. about 3 hours
D. about 4 hours
A punch recipe calls for 9 cups of juice. Angie
has used 6 cups of juice in the mixture. About
how much more juice does Angie need to finish
making the punch?
23
26
Round 9 to 10 and 6 to 6.23
26
Estimate 10 – 6 = 4.
Answer: So, about 4 more cups of juice are needed to finish making the punch.
1. A
2. B
3. C
4. D0% 0%0%0%
A recipe calls for 8 cups of water. If only
4 cups has been added in so far, about
how much more is needed?
17
56
A. about 2 cups
B. about 3 cups
C. about 4 cups
D. about 5 cups
End of the Lesson
Five-Minute Check (over Lesson 10–5)
Image Bank
Math Tool Chest
Add Like Fractions
1. A
2. B
3. C
4. D
0% 0%0%0%
(over Lesson 10–5)
Solve. Determine which answer is reasonable. Ali bought lunch at a restaurant. She spent $5.75 for a sandwich, $1.99 for a cup of soup, and $1.29 for milk. Which is a more reasonable estimate for the amount of money Ali spent on lunch?
A. $10.00
B. $11.00
C. $9.00
D. $8.00