113/7+154/7+413/7
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(113:7+154:7+413:7\)
\(=\left(113+154+413\right):7\)
\(=680:7\)
\(=97.7+1\)
![](https://rs.olm.vn/images/avt/0.png?1311)
B = 113 : 7 + 154 : 7 + 413 : 7
B = (113 + 154 + 413) : 7
B = 680 : 7
B = 680/7
![](https://rs.olm.vn/images/avt/0.png?1311)
133 : 7 + 154 : 7 + 413 : 7
= ( 133 + 154 + 413 ) : 7
= 700 : 7
= 100
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(325.6+6.650+115.6\)
\(=6.\left(325+650+115\right)\)
\(=6.1090\)
\(=6540\)
\(133:7+154:7+413:7\)
\(=\left(133+154+413\right):7\)
\(=700:7\)
\(=100\)
\(325.6+6.560+115.6\)
\(=6.\left(325+560+115\right)\)
\(=6.1000\)
\(=6000\)
\(133:7+154:7+413:7\)
\(=\left(133+154+413\right):7\)
\(=700:7\)
\(=100\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a.58+42+32+58+72+42 b.133:7+154:7+413:7:4
=(58+42)+(58+42)+72+32 =133:7+154:7+413:4:7
=100+100+72+32 = 133:7+154:7+103,25 :7
=200+104 = (133+154+103,25):7
=304 = 390,25:7
= 55.75
![](https://rs.olm.vn/images/avt/0.png?1311)
1. Tính nhanh
a.325.6+6.560+6.115
=6*(325+560+115)
=6.1000
=6000
b.123:7+154:7+413:7
=(123+154+413):7
=690:7
=690/7
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 325 * 6 + 6 * 560 + 6 * 115
= 6 * ( 325 + 560 + 115 )
= 6 * 1000
= 6000
b) 133 : 7 + 154 : 7 + 413 : 7
= ( 137 + 154 + 413 ) : 7
= 504 : 7
= 72
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 66 x 25 + 5 x 66 + 66 x 14 + 33 x 66
= 66 x ( 25 + 5 + 14 + 66 )
= 66 x 110
= 7260
b) 35 x 25 + 35 x 41 + 64 x 65
=> không tính nhanh được
c) 325 x 6 + 6 x 560 + 115
= 6 x ( 325 + 560 ) + 115
= 6 x ( 885 + 115 )
= 6 x 1000
= 6000
d) 133 : 7 + 154 : 7 + 413 : 7
= 19 + 22 + 59
= 100
Đáp án :
a)66 x 25 + 5 x 66 x 14 + 33 x 66
=66 x ( 25 + 14 + 66 )
= 66 x 100
b)35 x 23 + 35 x 41 + 64 x 65
= 35 x ( 23 + 41 ) + 64 x 65
= 35 x 64 + 64 x 65
= 64 x ( 35+ 65 )
= 64 x 100
= 6400
c) 325 x 6 + 6 x 560 + 115
= 6 x ( 325 + 560 ) + 115
= 6x ( 885 + 15 )
= 6 x 1000
= 6000
d) 133 : 7 + 154 : 7 + 413 : 7
= ( 133 + 154 + 413 ) : 7
= 700 : 7
= 100
mk làm được hết đó!!
17+13=30
113/7 + 154/7 + 413/7 = 680/7