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a) 63 × 100 : 10 = 6300 : 10 = 630
b)960 × 1000 : 100 = 960000 : 100 = 9600
c)79 × 100 : 10 = 7900 : 10 = 790
d)90000 : 1000 × 10 = 90 × 10 = 900
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Ta có:(45 x 37 + 45 x 63) : (abcabc:abc-1000)
\(=45\left(37+63\right):\left(1001-1000\right)\)
\(=45.100:1=45.100\)
\(=4500\)
Vậy.......................
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Bài 1 lúc nãy mình làm rồi
Baif 2:
\(\left(487\times36+21783\right)\times\left(49200:492-100\right)\)
\(=\left(487\times36+21783\right)\times\left(100-100\right)\)
\(=0\times\left(487\times36+21783\right)\)
\(=0\)
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TL:
= 22 x ( 20 + 2 )
= 22 x 20 + 22 x 2
= 440 + 44
= 484
_HT_
Tìm x (Không thực hiện phép tính)
a.5*x=5*195
b.(x+5)*2009=(19+5)*2009
c.35*x<35*6
d.(15-x)*79<(15-2)*79
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72 x 11 = 792
32 x 11 = 352
45 x 11 = 495
61 x 11 = 671
53 x 11 = 583
72 * 11 = 792
32 * 11 = 352
45 * 11 = 495
61 *11 = 671
53 *11 = 583
đáp án là 4977 nha bạn
kết quả là 4977