Estimate These Calculations

Question 1:

0.0749×0.0859

0.0063

Question 2:

85.2×61.4

5400

Question 3:

0.1975 0.83

0.25

Question 4:

74.43 0.11

700

Question 5:

4.6×7.52 0.46

80

Question 6:

88.4×59.5 0.12

54000