Estimate These Calculations

Question 1:

0.0392×22.2

0.8

Question 2:

0.125×0.305

0.03

Question 3:

64.88 0.11

600

Question 4:

4.161 0.38

10

Question 5:

8.52×0.22 0.39

4.5

Question 6:

24.5×9.77 0.12

2000