Round off each to one significant figure then approximate the answer.
Example:23 + 19
20 + 20
= 40
Activity
1)73 - 48
2)171 ÷ 18
3)$470 + $610
4)$510 - $170
5)9.6 × 5.8
7)
8)
9)
10)
Answers
Answered by
2
Step-by-step explanation:
1) 70-50
= 20
2) 170 ÷ 20
= 8.5
3) 500 + 600
= 1100
4) 500 - 200
= 300
5) 10 × 6
= 60
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