-37 + 54 + (-70) + (-163 ) + 246

= [ (-37) + (-163) ] + ( 54 + 246 ) + (-70)

=           -200         +        300       + (-70)

=                          100                 + (-70)

=                                    30

dap an cua Den do

\(-37+54+\left(-70\right)+\left(-163\right)+246\\ =-37+54-70-163+246\\ =\left(-37-163\right)+\left(54+246\right)-70\\ =-200+300-70\\ =100-70\\ =30.\)

(-37)+54+(-70)+(-163)+246

=[(-37)+(-163)]+(54+246)+(-70)

=[-(37+163)]+300+(-70)

=-200+300+(-70)

=[+(300-200)]+(-70)

=100+(-70)

=+(100-70)

=30

= -(37+163)+(54+246)-70

= -200+300-70

= 100-70=30

Tính nhanh

-37+54-70-163+246

= (-37-163) + (54+246) - 70

= [ -37 + (-163)] + 300 -70

= [-(163+37)] + 300 - 70

= -200 + 300 - 70

= + (300-200) - 70

= 100 - 70

= 30

-37 + 54 - 70 - 163 + 246

= [(246 + 54) + (-37 - 163)] - 70

= [300 + (-200)] - 70

= 100 - 70

= 30

-37+54+(-70)+(-163)+246

= - 37 + 54 - 70 - 163 + 246

= (-37 - 163) + ( 54 + 246) - 70

= -200 + 300 - 70

= 100 - 70

= 30

a)(-37)+54+(-70)+(-163)+246

=[(-37)+(-163)]+(54+246)+(-70)

=(-200)+300+(-70)

=[(-200+(-70)]+300

=(-270)+300

=30

b)(-359)+181+(-123)+350+(-17)

=[(-359)+(-123)+(-17)]+[181+350]

=(-499)+531

=32

tick cho mk nha bạn 

= \(-37+54-70-163+246\)

\(=\left(-37-163\right)+\left(54+24\right)-70\)

\(=-200+78-70\)

\(=-200+\left(78-70\right)\)

\(=-200+8\)

\(=-192\)

thank you

a. -37 + 54 + -70+ -163 + 246

= ( 54 + 246) + (-37 - 163 )  - 70

= 300 -200 -  70 = 30

b. -359+ 181+ -123+ 350+ -172

=(-178)+227+(-172)

=49+(-172)

=-123

c.-69+ 53+ 46+ -94+-14+ 78

=(-16)+(-48)+64

=-64+64

=0

d. 13- 12+ 11+10- 9+ 8- 7- 6+ 5- 4+ 3+2- 1

= 13 - (13 - 1) + (13 - 2) + (13 - 3) - (13 - 4) + (13 - 5) - (13 - 6) - (13 - 7) + (13 - 8) - (13 - 9) + (13 - 10) + (13 - 11) - (13 - 12)

= 13 - 13 + 1 + 13 - 2 + 13 - 3 - 13 + 4 + 13 - 5 - 13 + 6 - 13 + 7 + 13 - 8 - 13 + 9 + 13 - 10 + 13 - 11 - 13 + 12

= (13 - 13 + 13 + 13 - 13 + 13 - 13 - 13 + 13 - 13 + 13 + 13 - 13) + (1 - 2 - 3 + 4 - 5 + 6 + 7 - 8 + 9 - 10 - 11 = 12)

= 13 + 0

= 13

a) \(-37+54+\left(-70\right)+\left(-163\right)+246\)

\(=\left(246+54\right)-\left(37+163\right)-70\)

\(=300-200-70\)

\(=100-70=30\)

b) \(-359+181+\left(-123\right)+350+\left(-172\right)\)

\(=-359+181-123+350-172\)

\(=\left(-359+350\right)+\left(181-172\right)-123\)

\(=-9+9-123\)

\(=-123\)

c) \(-69+53+46+\left(-94\right)+\left(-14\right)+78\)

\(=-69+53+46-94-14+78\)

\(=\left(-69+78\right)+\left(53-14\right)+\left(46-94\right)\)

\(=9+39-48\)

\(=48-48=0\)

d) \(13-12+11+10-9+8-7-6+5-4+3+2-1\)

\(=\left(13-12\right)+\left(11+10\right)-\left(9-8\right)-\left(7+6\right)+\left(5-4\right)+\left(3+2-1\right)\)

\(=1+21-1-13+1+5\)

\(=21-13+1+5\)

\(=8+1+5=9+5=14\)

a) (125 - 679 + 145) - (125 - 679)

= 125 - 679 + 145 - 125 + 679

= ( 125 - 125) - (679 - 679) + 145

= 0 - 0 + 145

= 145

a, (125 - 679 + 145) - (125 - 679)

125-679+145-125+679

=(125-125)+(-679+679)+145

=0+0+145

=145

b, -37 + 54 + (-70) + (-163) + 246

=[-37+(-70)+(-163)]+(54+246)

=[-107+(-163)]+300

=-270+300

=30

Trả lời:

\(a,\)\(\left(125-679+145\right)-\left(125-679\right)\)

\(=125-679+145-125+679\)

\(=\left(125-125\right)-\left(679-679\right)+145\)

\(=0-0+145\)

\(=145\)

\(b,\)\(-37+54+\left(-70\right)+\left(-163\right)+246\)

\(=\left(-37-163\right)+\left(54+246\right)-70\)

\(=-200+300-70\)

\(=100-70\)

\(=30\)

Hok tốt!

Vuong Dong Yet