Estimation
Estimate by rounding.
$.75
+.13
About $.90
78+43
121
$48.67 - 11.56
$37.11
40+ 93 +50
183
Estimate by rounding.
5478
- 3390
About 2000
Estimate by rounding.
$6.78
-4.39
About $3
$340.62 + 225.27
565.89
$7.95 - 3.55
$4.40
250 + 30
280
Find the value of the expression.11- b, when b= 3
81
. Estimate by rounding.
672
+183
about 900
$3.26
+5.53
8.79
10 -g= 2
What does G =
8
770 - 20
750
7 + r= 16
r=9
Estimate by rounding.
562,078
-314,989
about 300,000
Jean buys a shirt for $6.50 and sunglasses for $1.28. How much does she spend?
$7.78
Leo needs 20 points to win a game. After Round 2, she has 9 points. How many more does she need to win?
6 points are needed
0 + 4
4
Ken has 5 peaches. He eats some of them. Write an expression to show this
5-p
Is the answer reasonable?
Estimate by rounding.
88,296 - 77,948 = 10,348
yes
243 + 65
308
Alexa had $24.87. He spent $12.75 at the store. How much did he have left?
$12.12
2,981 - 1,450
1,531
Find the value of the expression.6+ y, when y= 20
26