Tính: 59 . 162 / 104 . 43
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a, 119 + 24 + 81
= ( 119 + 81 ) + 24
= 200 + 24
= 224
b, 16 . 6 . 125
= 16 . 125 . 6
= 2000 . 6
= 12000
c, 25 . 104
= 25 . 100 + 25 . 4
= 2500 + 100
= 2600
d, 12 . 19 + 12
= 12 . 19 + 12 . 1
= 12 . ( 19 + 1 )
= 12 x 20
= 240
e, 43 . 27 + 93 . 43 + 57 . 61 + 59 . 57
= 43 . ( 27 + 93 ) + ( 61 + 59 ) . 57
= 43 . 120 + 120 . 57
= 120 . 43 + 120 . 57
= 120 . ( 43 + 57 )
= 120 . 100
= 12000
a/ 199 + 24 + 81
= (119+81) + 24
= 200 + 24
= 224
b/ 16 . 6 . 125
= ( 16 . 125) . 6
= 2000 . 6
= 12000
c/ 25 . 104
= 25 . ( 100 + 4 )
= 25 . 100 + 25 . 4
= 2500 + 100
= 2600
d/43 . 27 + 93 . 43 + 57 . 61 + 59 . 57
= 43 . ( 27 + 93) + 57 . ( 61+ 59)
= 43 . 130 + 57 . 130
= (43 + 57) . 130
= 100 . 130
= 1300
\(\left(-59\right)\cdot\left(-43\right)-59\cdot53\)
\(=59\cdot43-59\cdot53\)
\(=59\cdot\left(43-53\right)\)
\(=59\cdot-10=-590\)
59 – 43 – 8 = 8
59 – 42 – 3 = 14
58 – 41 – 9 = 8
59 – 42 – 4 = 13
Đáp án cần chọn là A
\((-59)\times(-43)-59\times43\)
\(=59\times43-59\times53\)
\(=59\times(43-53)\)
\(=59\times-10\)
\(=-590\)
(-59) . (-43 ) - 59 . 53
= 59.43- 59.53
= 59. (43-53)
= 59. (-10)= -590
\(a,\left(326-43\right)+\left(174-57\right)\)
\(=326-43+174-57\)
\(=\left(326+174\right)-\left(43+57\right)\)
\(=500-100\)
\(=400\)
\(b,\left(-31\right).52+\left(-26\right).\left(-162\right)\)
\(=-1612+4212\)
\(=2600\)
\(43\cdot59+57\cdot59-43\cdot21-57\cdot21\)
\(=59\left(43+57\right)-21\left(43+57\right)\)
\(=3800\)
=59.(43+57)-21.(43+57)
=59.100-21.100
=100.(59-21)
=100.38
=3800
trả lời :
\(\frac{5^9.16^2}{10^4.4^3}=\frac{5^9.\left(2^4\right)^2}{2^4.5^4.\left(2^2\right)^3}=\frac{5^9.2^8}{2^{10}.5^4}=\frac{5^5}{2^2}=\frac{3125}{4}\)
\(\frac{5^9.16^2}{10^4.4^3}\)
\(=\frac{5^9.2^8}{2^4.5^4.2^6}\)
\(=\frac{5^5}{2^2}=\frac{3125}{4}\)