Question

Evaluate by using brackets 107*109 for class 6 beginners

Answer 1

Answer:

11663

Step-by-step explanation:

107×109

(100+7)×(100+9)

100×100+(7×9)100+7×9

10000+1600+63

11663

Answer 2

Answer:

Answer:11,663.

Step-by-step explanation:

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(107)×(109)

(100+7)(100+9)

using the identity

(x+a)(x+b)

x(x+b)+a(x+b)

=x²+xb+ax+ab

=x²+(a+b)x+ab

Here,

x=100

a=7

b=9

So,

=(100)²+(7+9)100+(7×9)

=10000+1600+63

Answer=11,663

Verification:-

107×109

=11,663

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