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Rounding
Estimating Sums
Estimating Differences
Sums and Differences with Pictures
Sums and Differences
100
2.25 rounded to the nearest tenth
What is 2.30
100
Estimate the sum of 7.4 + 3.7
What is 7+4=11
100
Estimate the difference of 8.2 - 5.4 =
What is 8 - 5 = 3
100
4.9 - 2.37
What is 2.53
100
5.21 + 0.99
What is 6.2
200
26.96 rounded to the nearest whole number
What is 27
200
Estimate the sum of 17.97 + 6.80
What is 18 + 7 =25
200
Estimate the difference of 12.07 - 7.23 =
What is 12 - 7 = 5
200
3.2 - 1.18
What is 2.02
200
78.35 - 2.6
What is 75.75
300
17.177 rounded to the nearest hundredth
What is 17.180
300
Estimate the sum of 29.29 + 42.52 =
What is 29 + 43 = 72
300
Estimate the difference of 24.50 - 11.78 =
What is 25 - 12 = 13
300
2.74 + 1.67
What is 4.41
300
157.38 + 23.69
What is 181.07
400
49.74 rounded to the nearest tenth
What is 49.70
400
Estimate the sum of 54.07 + 26.14 =
What is 54 + 26 = 80
400
Estimate the difference of 15.06 - 4.6 =
What is 15 - 5 = 10
400
2.08 + 1.26
What is 3.34
400
13.18 + 18 + 59.78
What is 90.96
500
13.552 rounded to the nearest tenth
What is 13.60
500
Estimate the sum of 14.6 + 21.07 =
What is 15 + 21 = 36
500
Estimate the difference of 99.89 - 9.52 =
What is 100 - 10 = 90
500
3 - 1.4
What is 1.6
500
244 - 5.18
What is 238.82