Question

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Answer 1

$\huge\mathfrak \blue{solution}$

★ 103×107

= (100+3)(100+7)

= 100 ² + (3+7)(100) +3 × 7

= 10000 + 1000 + 21 = 11021

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★ 95×96

= (90+5) (90+6)

= 90 ²+ ( 5+6 )( 90) + 5 × 6

= 8100 + 990 + 30 = 9120

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★ 104 × 96

= (100 + 4 ) + (100 - 4 )

= (100 ² ) - 4²

= 10000 - 16 = 9984

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Answer 2

$\huge\mathfrak \blue{solution}$

★ 103×107

= (100+3)(100+7)

= 100 ² + (3+7)(100) +3 × 7

= 10000 + 1000 + 21 = 11021

___________________________________

★ 95×96

= (90+5) (90+6)

= 90 ²+ ( 5+6 )( 90) + 5 × 6

= 8100 + 990 + 30 = 9120

___________________________________

★ 104 × 96

= (100 + 4 ) + (100 - 4 )

= (100 ² ) - 4²

= 10000 - 16 = 9984

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