Estimate: 80 times 50 = 4000
Actual: 77 times 52 = 4004
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Least Common Multiple (LCM) for 7 275 77 is 1,925.7275 = 52 x 1177 = 7 x 11LCM = 52 x 7 x 11
If 11 + X = 77, X = 66. What you have to do is 77 - 66, and that = 11!
Best estimate is 20 x 40 = 800 Actual answer is 22 x 39 = 858
A reasonable estimate might be 6000 x 90 = 540000
830 x 77 = 63,910