-47.69+31.(-155)+5.(-3)mũ2
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A) (-4.-7).(2.5).(6.25)
=28.10.150
=280.150=42000
B)=3243+(-1457)
=47000
\(-47.69+31.\left(-47\right)\)
\(=-47\left(69+31\right)\)
\(=-47.100\)
\(=-4700\)
\(25.11.\left(-15\right)-50.15.\left(-5\right)\)
\(=25.11.\left(-15\right)-25.15.2.\left(-5\right)\)
\(=25.\left(-15\right).11-25.\left(-15\right).10\)
\(=25.\left(-15\right).\left(11-10\right)\)
\(=25.\left(-15\right)=-375\)
\(=47\cdot69-31\cdot\left(-47\right)\\ =47\cdot69+31\cdot47\)
\(=47\cdot\left(69+31\right)\)
\(=47\cdot100\\ =4700\)
47 . 69 - 31 . ( - 47 )
= 47 . 69 + 31 . 47
= 47 . ( 69 + 31 )
= 47 . 100
= 4700
a, [(-8) + (-7)] + 10
= (-15) + 10
= -5.
b, (-47).69+31.(-47)
= (-47) . ( 69 + 31 )
= (-47) . 100
= -4700.
a) \(47.69-31\left(-47\right)=47-69-\left(-31\right).47\)
\(=47.69+31.47=47.\left(69+31\right)=47.100=4700\)
b) \(16\left(38-2\right)-38\left(16-1\right)=16.38-16.2-38.16-\left(-38\right).1\)
\(=\left(16.38-38.16\right)-32+38=0-32+38=6\)
c) \(\left(-41\right)\left(59-2\right)+59\left(41-2\right)\) \(=\left(-41\right).59-\left[\left(-41\right).2\right]+59.41-59.2\)
\(=\left[\left(-41\right).59+59.41\right]-\left[\left(-49\right).2-51.2\right]=0-\left(-100\right).2=200\)
d) \(125.\left(-8\right)\left(-25\right)9.4.1000\div3=125.200.9.4.1000\div3\)
\(=\left(125.4\right)\left(9\div3\right)\left(200.1000\right)=500.3.200000=300000000\)
a) \(-524\cdot\left[23+\left(-45\right)\right]+524\cdot\left(-45+123\right)\)
\(=-524\cdot\left[\left(23-45\right)-\left(-45+123\right)\right]\)
\(=-524\cdot\left(23-45+45-123\right)\)
\(=-524\cdot-100\)
\(=52400\)
b) \(47\cdot69-31\cdot\left(-47\right)\)
\(=-47\cdot\left(-69-31\right)\)
\(=-47\cdot-100\)
\(=4700\)
c) \(16\left(38-2\right)-38\left(16-1\right)\)
\(=16\cdot38-16\cdot2-38\cdot16+38\)
\(=-16\cdot2+38\)
\(=-36+38\)
\(=2\)
d) \(\left(-41\right)\cdot\left(59+2\right)+59\cdot\left(41-2\right)\)
\(=-41\cdot59-41\cdot2+41\cdot59-2\cdot59\)
\(=-41\cdot2-2\cdot59\)
\(=-2\left(41+59\right)\)
\(=-2\cdot100\)
\(=-200\)
e) \(25\cdot\left(-8\right)\cdot\left(-25\right)\cdot9\cdot4\cdot100^0:3\)
\(=\left(-1000\right)\cdot\left(-25\right)\cdot9\cdot4\cdot1:3\)
\(=25000\cdot9\cdot4:3\)
\(=25000\cdot3\cdot4\)
\(=100000\cdot3\)
\(=300000\)