14 x 0.5 = 7
1000 x 50 = 50000
50 x 600 = 30000
81.9 * 4.6 = 80*4.5 = 40*9 = 360Exact answer is 376.74
7 x 4 = 28
Best estimate is 20 x 40 = 800 Actual answer is 22 x 39 = 858
30 x 20 = 600 ounces
A reasonable estimate might be 6000 x 90 = 540000
The best estimate is the true value.
Best estimate is 30 x 6 = 180 Actual answer is 192.34
8 x 37.5 = 300
6 x 3 = 18
14 x 0.5 = 7
1000 x 50 = 50000
484 X 30
8 x 90 = 720
3830 x 180 = 689400