Question

[Thám tử lừng danh Conan]

Tình nhanh

1) 35 x 1001 - 35

2 ) 140x 14 x 5 - 14 x 3

Answer 1

[l҉o҉n҉g҉ d҉z҉]

1) 35 x 1001 - 35 = 35 x 1001 - 35 x 1

= 35 x (1001 - 1)

=35 x 1000

= 35 000

2) 140 x 14 x 5 - 14 x 3

= 14 x ( 140 x 5 - 3)

= 14 x 679

=9758

Answer 2

[TFBoys_Thúy Vân]

1) 35 x 1001 - 35

=  35 x (1001-1)

=  35 x 1000

=  35000

2) 140 x 14 x 5 - 14 x 3

=  (140 x 5) x 14 - 14 x 3

=   700 x 14 - 14 x 3

=    14 x (700-3)

=     9758

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