Question

Tính nhanh(nhớ bỏ dấu ngoặc)

a)1000-(137+572)+(263-291)

b)-329+(15-101)-(25-440)

Answer 1

a. 1000 - (137 + 572) + (263 - 291)

= 1000 - 137 - 572 + 263 - 291

= 1000 - (137 + 572 + 291) + 263

= 1000 - 1000 + 263

= 263

b. -329 + (15 - 101) - (25 - 440)

= -329 + 15 - 101 - 25 + 440

= (15 + 440) - (329 + 101 + 25)

= 455 - 455

= 0

Answer 2

a) 1000 - 137 - 572 + 263 - 291

= 1000 - ( 137 + 572 + 291 ) + 263

= 1000 - 1000 + 263

= 263

b) -329 + 15 - 101 - 25 + 440

= ( -329 + 15 - 101 - 25 ) + 440

= -440 + 440 

= 0

Answer 3

a)1000-(137+572)+(263-291)

=1000-137-572+263-291

=263

b)-329+(15-101)-(25-440)

=-329+15-101-25+440

=0

Answer 4

a)1000-(137+572)+(263-219)

=1000-709+44

=291+44

=335

b)thì chịu

Answer 5

a. 1000 - (137 + 572) + (263 - 291)

= 1000 - 137 - 572 + 263 - 291

= 1000 - (137 + 572 + 291) + 263

= 1000 - 1000 + 263

= 263

b. -329 + (15 - 101) - (25 - 440)

= -329 + 15 - 101 - 25 + 440

= (15 + 440) - (329 + 101 + 25)

= 455 - 455

= 0