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Question

While mulitplying 256×196 by box method, find the missing numbers in the below box.

A
A =1,200; B =540 and C =36
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B
A =1,200; B =4,500 and C =300
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C
A =1,200; B =4,500 and C =36
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D
None of the above
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Solution

The correct option is C A =1,200; B =4,500 and C =36
To multiply two numbers using the box method, we must first express them in expanded form.

Numbers in expanded form are:
256=200+50+6 and
196=100+90+6

Now, 256×196=(200+50+6)×(100+90+6)
Since, both the numbers are of three digits, we need 3×3 box as depicted in figure below,


now, multiplying numbers on left of box by numbers on top of box one by one as shown in below figure,


Therefore, comparing this box with the given box,
A =1,200; B =4,500 and C =36.

(c) is the correct option.

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