723 x 542 : 1084
Tính : D=723 x 542 : 1084
E=310 x 11 x 5 : 39 x 24
723×542:1084=361.5
310×11×5:39×24=10492.30769
72^3 x 54^2 : 1084
1084 + (942 - 2x) : 36 x 14 = 1434
1. Tính nhanh.
a, 542 x 7 + 542 x 2 + 542
b, ( 126 x 35 + 157 x 55 ) x ( 132 - 6 x 22 )
c, 897 x 99 + 897
a) 542 x 7 + 542 x 2 + 542
= 542 x 7 + 542 x 2 + 542 x 1
= 542 x (7 + 2 + 1)
= 542 x 10
= 5420
b) (126 x 35 + 157 x 55) x (132 - 6 x 22)
= (126 x 35 + 157 x 55) x (132 - 132)
= (126 x 35 + 157 x 55) x 0 (Số bất kỳ nào nhân với 0 vẫn = 0)
= 0
c) 897 x 99 + 897
= 897 x 99 + 897 x 1
= 897 x (99 + 1)
= 897 x 100
= 89700
a) \(542.7+542.2+542\)
\(=542.\left(2+7+1\right)\)
\(=542.10=5420\)
b) \(\left(126.35+157.55\right).\left(132-6.22\right)\)
\(=13045.0=0\)
c) \(897.99+897\)
\(=897.\left(99+1\right)\)
\(=897.100=89700\)
Giai bai toan 1084 + (942 - 2x) : 36 x 44 = 1434
1084 +(942 -2x) :36 x44 =1434
=>(942 -2x) :36 x44 =1434 -1084
=>(942 -2x) :36 x44 = 350
=>(942 -2x) :36 =350 :44
=>(942 -2x) :36 =175 /22
=>(942 -2x)=175 /22x 36
=>(942 -2x)= 3150 /11
=>2x = 3150 /11-942
=>2x =-7212 /11
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\(1084+\left(942-2x\right)\div36\cdot44=1434\)
\(\left(942-2x\right)\div36\cdot44=1434-1084\)
\(\left(942-2x\right)\div36\cdot44=350\)
\(\left(942-2x\right)\div36=350\div44\)
\(\left(942-2x\right)\div36=\frac{175}{22}\)
\(942-2x=\frac{175}{22}\cdot36\)
\(942-2x=\frac{3150}{11}\)
\(2x=942-\frac{3150}{11}\)
\(2x=\frac{7212}{11}\)
\(\Rightarrow x=\frac{3606}{11}\)
1. Tính nhanh.
a, 542 x 7 + 542 x 2 + 542
b, ( 126 x 35 + 157 x 55 ) x ( 132 - 6 x 22 )
c, 897 x 99 + 897
a: \(542\cdot7+542\cdot2+542\)
\(=542\left(7+2+1\right)\)
\(=542\cdot10=5420\)
b: \(\left(126\cdot35+157\cdot55\right)\cdot\left(132-6\cdot22\right)\)
\(=\left(126\cdot35+157\cdot55\right)\left(132-132\right)\)
\(=0\cdot\left(126\cdot35+157\cdot55\right)\)
=0
c: \(897\cdot99+897\)
\(=897\left(99+1\right)\)
\(=897\cdot100=89700\)
Rút gọn phân số : E = 723 x 542 phần 1084
Rút gọn phân số : E = 723 x 542 phần 1084
20596:1084=