Question

Tính nhanh:

a, 4524-(864-999)-(36+3999)

b,1000-(137+572)+(263-291)

c, -329+(15-101)-(25-440)

Answer 1

a, 4524 - 864 + 999 - 36 - 3999
= 4524 - ( 864 + 36 ) + ( 999 - 3999)
= 4524 - 900 +( -3000)
= 624

Answer 2

b, 1000 - (137+572) + ( 263 - 291)
=1000-137-572+263-291
=(1000-137-572-291)+263
=0+263
=263
c,c, 4524 - (846 - 999) - ( 36+3999)
=4524-846+999-36-3999
=(4524-846-36)+(999-3999)
=3642-3000
=642Chuc ban hoc tot !

Answer 3

a) 4524 - ( 864 - 999 ) - ( 36 + 3999 )

= 4524 - 864 + 999 - 36 - 3999

= 4524 - ( 864 + 36 ) - ( 3999 - 999 )

= 4524 - 900 - 3000

= 3624 - 3000

= 624

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

= 1000 - 137 - 572 + 263 - 291

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

= 1000 - 1000 + 263

= 0 + 263

= 263

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

= -329 + 15 - 101 - 25 + 440

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

= 440 - 430 - 10

= 0

Chuk bạn hok tốt ! 

Answer 4

a) 4 524 - ( 864 - 999 ) - ( 36 + 3 999 )

= 4 524 - ( - 135 ) - 4 035

= 4 524 + 135 - 4 035

= 4 659 - 4 035

= 624

b) 1 000 - ( 137 + 572 ) + ( 263 - 291 )

= 1 000 - 709 + ( - 28 )

= 291 + ( - 28 )

= 263

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

= - 329 + ( - 86 ) - ( - 415 )

= - 415 - ( - 415 )

= - 415 + 415

= 0