Math Worksheet - Grade 7 Page 29
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34th
7
Grade Honors
Unit: Knowledge of Number Relationships & Computation
Objective: Estimate to determine approximate sums, differences, products, and quotients.
Examples:
Estimate by rounding to the nearest whole numbers.
GOAL: to make the problem simpler – estimate before computing.
Decimals:
23.485 – 9.757 = 23 – 10 = 13
6.43 + 2.17 + 9.1 + 4.87 = 6 + 2 + 9 + 5 = 22
43.9 x 37.5 = 40 x 40 = 1600
432.87 ÷ 8.9 = 450 ÷ 9 = 50
2
7
2
1
Fractions:
4 + 5 = 9
6
x
1
6 x 2 = 12
3
5
+
=
=
5
8
3
6
3
7
9 ÷ 3 = 3
2
8
÷
=
4
9
Estimate by rounding:
1.) 34.84 – 17.69 + 8.4
1
1
2.)
2
3
+
=
5
2
3.) 26.3 x 9.7
1
3
4.)
x
5
4
=
4
8
5.) 41.79 ÷ 6.8
8
3
6.)
÷
=
15
3
9
5
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