Question

[Nguyễn Hương Giang]

Câu 1. Tính theo cách thuận tiện nhất:

25 x 96 x 4 x 2 ...................................................................................................................................................... 155 x 42 + 155 x 58 .................................................................................................................................................... 461 x 35 + 35 x 539 196 x 73 + 196 x 27 ...................................................................................................................................................... .....................................................................................................................................................

Answer 1

[ShadowKiri2407]

1.
=(25x4)x(96x2)
=100x192=19200
2.
=155x(42+58)
=155x100=1500
3.
=35x(461+539)
=35x1000=35000
4
=196x(73+27)
=196x100=19600

Answer 2

[ShadowKiri2407]

1. =(25x4)x(96x2) =100x192 = 19200
2. =155x(42+58) = 155x100 = 15500
3. =35x(461+539) = 35x100 = 35000
4. =196x(73+27)=196x100=19600