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?)
NCERT Class 6th Mathematics Chapter 1 Knowing our Numbers Exercise 1.2 Question 8
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1
its answer will differ from 65125
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wrong number 65×7236
right number = 56×7236
difference= 7236×65 - 7236×56
= 7236×(65-56)
= 7236×9
= 7236×(10-1)
=7236×10 - 7236
= 72360 - 7136
= 65124
right number = 56×7236
difference= 7236×65 - 7236×56
= 7236×(65-56)
= 7236×9
= 7236×(10-1)
=7236×10 - 7236
= 72360 - 7136
= 65124
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