Question

-2003 +(-21+75+2003)

1152 + (374+1152) + (-65 +374)

trong hôm nay nhé tick cho

tính hợp lí 

Answer 1

-2003 +(-21+75+2003)

= -2003 -21+75+2003

= (2003-2003) + (75-21)

= 0 + 54

= 54

1152 + (374+1152) + (-65 +374)

= 1152 + 374+1152 -65 +374

= (1152+1152)+(374+374) - 65

= 1152.2 + 374.2 - 65

= 2304 + 748 - 65

= 3052 -  65

= 2987

Answer 2

Câu 1:

-2003 +(-21+75+2003)

= -2003 + (-21) + 75 + 2003

=  (-2003+2003) + (-21) + 75

=       0 + (-21) + 75

=              54

Câu 2:

1152 + (374+1152) + (-65 +374)

= 1152 + 374 + 1152 + 374+ (-65)

=   1526 + 1526 + (-65)

= 3052 + (-65)

=       2987

Answer 3

-2003 +(-21+75+2003)

= -2003 -21+75+2003

= (2003-2003) + (75-21)

= 0 + 54

= 54

1152 + (374+1152) + (-65 +374)

= 1152 + 374+1152 -65 +374

= (1152+1152)+(374+374) - 65

= 1152.2 + 374.2 - 65

= 2304 + 748 - 65

= 3052 -  65

= 2987

Answer 4

= 54

= 2987

Answer 5

bằng 54 và 2987

Answer 6

\(-2003+\left(-21+75+2003\right)\)

\(=-2003-21+75+2003\)

\(=\left(-2003+2003\right)+\left(75-21\right)\)

\(=0+54\)

\(=54\)

\(1152+\left(374+1152\right)+\left(-65+374\right)\)

\(=1152+374+1152-65+374\)

\(=2.1152+2.374-65\)

\(=2\left(1152-374\right)-65\)

\(=2.778-65\)

\(=1556-65\)

\(=1491\)