Question

A student multiplied 7236 by 65 instead of multiplying by 56. By how much was his answer greater than the correct answer? (Hint: Do you need to do both the multiplications?)

Answer 1

Wrong answer = 7236 x 65 Correct answer = 7236 x 56
7236 7236
x 65 x 56
36180 43416
43416 x 36180 x
470340 405216
Difference in answers = 470340 – 405216
= 65,124