-42(35-16)-35(16-42)
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\(42.\left(16-35\right)-35.\left(16-42\right)\)
\(=42.16-42.35-35.16+35.42\)
\(=42.\left(35-35\right)+16.\left(42-35\right)\)
\(=42.0+16.7\)
\(=0+112\)
\(=112\)
42. (16- 35) - 35. ( 16- 42)
= 42 . ( -19 )-35 . (-26 )
= -798 +910
=112
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\(4^3\times27-4^3\times23\)
\(=4^3\times\left(27-23\right)\)
\(=64\times4\)
\(=256\)
\(3^4\times71+3^4\times2^9\)
\(=3^4\times\left(71+2^9\right)\)
\(=81\times\left(71+512\right)\)
\(=81\times583\)
\(=47223\)
\(\left(3^3\times5^2-2^4-16\right)\times13\)
\(=\left(27\times25-16-16\right)\times13\)
\(=\left(675-16-16\right)\times13\)
\(=\left(659-16\right)\times13\)
\(=643\times13\)
\(=8359\)
\(35\times273+33\times35\)
\(=35\times\left(273+33\right)\)
\(=35\times306\)
\(=10710\)
\(2^3\times4^2+2^3\times84-40\)
\(=8\times16+8\times84-40\)
\(=8\times\left(16+84\right)-40\)
\(=8\times100-40\)
\(=800-40\)
\(=760\)
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a) 7 x 5 = 35 7 x 6 = 42 7 x 8 = 56 7 x 4 = 28
35 : 7 = 5 42 : 7 = 6 56 : 7 = 8 28 : 7 = 4
b) 42 : 7 = 6 35 : 7 = 5 63 : 7 = 9 16 : 2 = 8
14 : 7 = 2 49 : 7 = 7 7 : 7 = 1 48 : 6 = 8
28 : 7 = 4 70 : =10 21 : 7 = 3 56 : 7 = 8
![](https://rs.olm.vn/images/avt/0.png?1311)
b: \(=\dfrac{3}{7}\cdot\dfrac{5}{7}\cdot\dfrac{6}{7}=\dfrac{90}{343}\)
c: \(=\dfrac{4}{9}\cdot\dfrac{5}{9}\cdot\dfrac{3}{7}=\dfrac{20}{189}\)
d: \(=\dfrac{1}{3}\cdot\dfrac{5}{12}\cdot\dfrac{5}{12}=\dfrac{25}{432}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
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a: 42 + 35 = 77
b: 60 + 17 = 77
c: 81 + 16 = 97
d: 24 + 52 = 76
a) 42 + 35 = 77
b) 60 + 17 = 77
c) 81 + 16 = 97
d) 24 + 52 = 76
= 112 ạ e mx hk lp 5 thoy chx hiểu nhiều lắm về toán lp 6 , còn phép trên e tính máy ạ
- 42 ( 35 -16 ) - 35 ( 16 - 42 )
= - 42 * 19 - 35 * ( - 26 )
= - 798 + 910
= 112