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

heya !!

here is ur answer

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↪ there are two cases in this problem.

case (1) student multiplied 7236 by 56.

let's solve this :-

7236 ×56 = 405216

case(2) student multiplied 7236 by 65.

7236 × 65 = 470340

✴ case (2) answer is more , which the student did by mistake.

➡ how much the number is great ??

let's find :-

♦ 470340 - 405216 = 65124

✴ so ,

wrong calculation is 65124 , greater than the real calculation.

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hope it helps u..!!

Answer 2

Heya!

Sheena here...

So your question explanation =>

A students multiplies the number 7236 by 65 mistakely when he/she had to multiply it by 56. So we need to find how much his answer is greater than the correct answer. The hint provided asks us if there is only the need of doing both the multiplications or we have any other way.

Answer =>

Frankly this problem has 2 methods to solve. I will suggest you the easy one But I will mention you both the methods.

1st Method (Long Method)

First you need to multiply 7236 by 65 

= 7236*65
= 470340

Now multiply 7236 by 56

= 7236*56
= 405216

Now subtract 405216 from 470340


= 470340-405216
= 65124

Therefore the student's answer is 65124 greater than the correct answer.

2nd Method (Easy and Short)

Actually I prefer you this method for the above question as this is more easy.

So first subtract 56 from 65

= 65-56
= 9

Now multiply 7236 by 9

= 7236*9
= 65124

Wasn't it easy? Actually try this method only because this method is according to your hint and also easy to solve and understand.

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Hope this helped you!