a) 46 + 17 + 54
b) 4 . 37 . 25
c) 87 . 36 + 87 . 64
ai nhanh mk tick
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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
=(46+54)+17
=100+17
=117
b) 4x37x25
=25x4x37
=100x37
=3700
c) 87x36+87x64
=87x(36+64)
=87x100
=8700
tk nhé
46 +17 + 54
= (46 + 54) + 17
= 100 + 17
= 117
4 x 37x.25
= (4 x 25) x 37
= 100 x 37
= 3700
87 x 36 + 87 x 64
= 87 x (36 + 64 )
= 87 x 100
= 8700
a. 4.37.25.50.12
=(4.25).(50.12).37
=100.600.37
=2220000
\(a.\left(4.50\right).\left(25.12\right).37\)
\(=200.300.37=2220000\)
\(b.\left(46+54\right)+\left(17+83\right)\)
\(=100+100=200\)
\(c.87.\left(36+69\right)=87.105=9135\)
\(d.\left(135+65\right)+\left(360+40\right)\)
\(=200+400=600\)
\(e.\left(463+137\right)+\left(318+22\right)\)
\(=600+340=940\)
a. 27 x (121-87-(16))
= 27 x 50
= 1350
b. (-37)x (17+23-46)
=-37 x -6
= 222
c. 41 x (-18-81-1)
= 41 x -100
= -4100
d. 1080 + 120
= 1200
a) (-12) + 25 + 75 + 12 = (-12) + 12 + 25 + 75 = 0 +100 = 100.
b) 60 +12 + (-17) + (-43) = 60 + [(-47) + (-43)] +12.
c) (-2) + (-87) + (-18) + 87 = [(-2) + (-18)] + [(-87) + 87].
d) (-1)+(-2) + 36 + (-17) = 36+[(-1) + (-2) + (-17)].
Answer:
Bài 1:
\(\left(135-35\right).\left(-37\right)+37.\left(-42-58\right)\)
\(=100.\left(-37\right)+37.\left(-100\right)\)
\(=\left(-3700\right)+\left(-3700\right)\)
\(=-7400\)
\(-65.\left(87-17\right)-87.\left(17-65\right)\)
\(=\left(-65\right).87-\left(-65\right).17-87.17+87.65\)
\(=-\left(-65\right).17-87.17\)
\(=17.\left(65-87\right)\)
\(=-374\)
\([3.\left(-2\right)-\left(-8\right)].\left(-7\right)-\left(-2\right).\left(-5\right)\)
\(=[\left(-6\right)+8].\left(-7\right)-\left(-2\right).\left(-5\right)\)
\(=2.\left(-7\right)-10\)
\(=-24\)
Bài 2:
\(\left(-55\right).\left(-25\right).\left(-8\right)\)
\(=\left(-55\right).[\left(-25\right).\left(-8\right)]\)
\(=\left(-55\right).200\)
\(=-11000\)
\(\left(-1\right).\left(-2\right).\left(-3\right).\left(-4\right).\left(-5\right).10\)
\(=[\left(-1\right).10].[\left(-2\right).\left(-5\right)].[\left(-3\right).\left(-4\right)]\)
\(=\left(-10\right).10.12\)
\(=-1200\)
a) 46 + 17 + 54 = 117
b) 4 . 37 . 25 = 3700
c) 87. 36 + 87 . 64 = 8700
kick mik đi
a, 117
b,3700
c,8700