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57 \(\times\) 46 + 57 \(\times\) 54
= 57 \(\times\) ( 46 + 54)
= 57 \(\times\) 100
= 5700
137 + 355 + 63 + 45
= ( 137 + 63) + ( 355 + 45)
= 200 + 400
= 600
215 \(\times\) 48 - 215 \(\times\) 38
= 215 \(\times\) ( 48 - 38)
= 215 \(\times\) 10
= 2150
4 \(\times\) 50 \(\times\) 25
= ( 4 \(\times\) 25) \(\times\) 50
= 100 \(\times\) 50
= 5 000
57×(46+54) =57×100=5700
137+355+63+45=(137+63) +(355+45) =200+400=600
215×48-215×38=215×(48-38) =215×10=2150
4×50×25=(4×25) ×50=100×50=5000
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378 x 46 + 189 x 72 - 4 x 78 x 25
= 17388 + 13608 - ( 4 x 25 ) x 78
= 17388 + 13608 - ( 100 x 78 )
= 17388 + 13608 - 7800
= ( 17388 - 7800 ) + 13608
= 9588 + 13608
= 23196
![](https://rs.olm.vn/images/avt/0.png?1311)
46 x 4 x 25
* Trả lời :
46 x 4 x 25
= 46 x ( 4 x 25 )
= 46 x 100
= 4600
![](https://rs.olm.vn/images/avt/0.png?1311)
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TL:
\(358x46+358x35+358x19\)
\(=358x\left(46+35+19\right)\)
\(=358x100\)
\(=35800\)
_HT_
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29.079 x 45 + 29.079 - 46 x 29.079
= 29.079 x 45 + 29.079 x 1 - 46 x 29.079
= 29.079 x (45 + 1 - 46)
= 29 079 x 0
= 0