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a, ( 46 + 54 ) + 17 = 100 + 17 = 117
b, ( 4 . 25 ) . 37 = 100 . 37 = 3700
c, 87 . ( 36 + 64 ) = 87 . 100 = 8700
a,46+17+54
=(46+54)+17
=100+17
=117
b,4.37.25
=(4.25).37
=100.37
=3700
c,87.36+87.64
=87.(36+64)
=87.100
=8700
Chúc bạn học giỏi nha ^-^
a) 46 + 17 + 54 = 117
b) 4 . 37 . 25 = 3700
c) 87. 36 + 87 . 64 = 8700
kick mik đi
\(a,=\left(123-123\right)+\left(54+46\right)=100\\ b,=\left(-64+64\right)+\left(71-111\right)=-40\)
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. 4.37.25.50.12
=(4.25).(50.12).37
=100.600.37
=2220000
\(a.\left(4.50\right).\left(25.12\right).37\)
\(=200.300.37=2220000\)
\(b.\left(46+54\right)+\left(17+83\right)\)
\(=100+100=200\)
\(c.87.\left(36+69\right)=87.105=9135\)
\(d.\left(135+65\right)+\left(360+40\right)\)
\(=200+400=600\)
\(e.\left(463+137\right)+\left(318+22\right)\)
\(=600+340=940\)
b)-359+181+(-123)+350+(-172)
=(-359+350)+181+[(-123)+(-172)]
= -9+181+(-295)
= 172+(-295)
= -123
a) -37+54+(-70)+(-163)+246
=(54+246)+[(-37)+(-163)]+(-70)
=300+(-500)-(-70)
= -200+(-70)
= -270
a) 54-37+246-163-70=30
b)181+350-359-123-172=-123
c)53+46+78-69-94-14=0
k nhanh nha
-37 + 54 + (-70) + (-163) + 246
= [-37 + (-70) + (-163)] + (54 + 246)
= [-200 + (-70)] + 300
= -270 + 300
= 30
-359 + 181 + (-123) + 350 + (-172)
= [-359 + (-123) + (-172)] + 181 + 350
= -654 + 181 + 350
= -473 + 350
= -123
-69 + 53 + 46 + (-94) + (-14) + 78
= [-69 + (-94) + (-14)] + 53 + 46 + 78
= -177 + 53 + 46 + 78
= -124 + 46 + 78
= -124 + 124
= 0
Học tốt!!!
a,(567-46)-(54+567)
=567-46+54-567
=567.(46+54)
=567.100
=56700
TRả lời :
a) 46+17+54
=(46+54)+17
=100+17
=117
b) 4.37.25
=(4.25).37
=100.37
=3700
Hok_Tốt
a) \(46+17+54\)
\(=46+54+17\)
\(=\left(46+54\right)+17\)
\(=100+17=117\)
b) \(4\cdot25\cdot37\)
\(=100\cdot37=3700\)
*~Học tốt!~*