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Vừa ăn bánh sinh nhật lừa làm bài nên hơi lâu ==*
16 . 125 = 2 . 23 . 53 . = 2 . 103 = 2 . 1000 = 2000
9 . 24 . 25 = 9 . 6 . 4 . 25 = 54 . 100 = 5400
12 . 125 . 54 = 3 . 33 . 23 . 53 . 5 = 15 . 3000 = 45000
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a) 14.50 = (14.100)/2 =1400 /2 = 700 (vì 50 .2=100)
16 . 25 = (16.100)/4 = 1600/4= 400 (vì 25 .4 =100)
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a, 997 + 37 = 1034
b, 1354 - 996 = 358
c, 9 . 24 . 25 = 5400
d, 12 . 125 . 54 = 81000
e, 64 . 125 . 875 = 7000000
a) 997+37=1034
b) 1354-996=358
c)9x24x25=5400
d)12x125x54=81000
e)64x125x875=7000000
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a)
14 . 50 = ( 14 : 2 ) . ( 50 . 2 ) = 7 . 100 = 700
16 . 25 = ( 16 : 4 ) . ( 25 . 4 ) = 4 . 100 = 400
b)
2100 : 50 = ( 2100 . 2 ) : ( 50 . 2 ) = 4200 : 100 = 42
1400 : 25 = ( 1400 . 4 ) : ( 25 . 4 ) = 5600 : 100 = 56
c)
132 : 12 = ( 120 + 12 ) : 12 = 120 : 12 + 12 : 12 = 10 + 1 = 11
96 : 8 = ( 88 + 8 ) : 8 = 88 : 8 + 8 : 8 = 11 + 1 = 12
Học tốt nhé bạn !!!
a) 14.50=(14:2)(50.2)=7.100=700
16.25=(16:4)(25.4)=4.100=400.
b) 2100:50=(2100.2): (50.2) 2100:50 = 4200:100=42;
1400:25=(1400.4): (25.4)= 5600:100=56.
c) 132:12=(120+12) : 12 = 120 : 12 + 12 : 12 = 10 + 1 = 11
(Ta phân tích: 132 = 120+12)
96:8=(80+16):8=80: 8+16:8=10+2=12.
(Ta phân tích: 96 = 80+16).
a) \(14.50=7.2.50=7.100=700\)
b) \(16.125=2.8.125=2.1000=2000\)
c) \(9.4.25\)
\(=9.6.4.25\)
\(=54.1000\)
\(=5400\)
d) \(12.125.54=3.4.125.2.27=3.27.4.2.125\)
\(=81.8.125\)
\(=81.1000\)
\(=81000\)
\(a,14.50=14.100:2=1400:2=700\\ b,16.125=\left(16:8\right).\left(125.8\right)=2.1000=2000\\ c,9.24.25=9.6.4.25=54.100=5400\\ d,12.125.54=\left(3.4\right).125.\left(27.2\right)=\left(3.27\right).\left(4.2.125\right)=81.1000=81000\)