脱式计算,能简算的要简算46×13+54×13 99×5...
脱式计算,能简算的要简算46×13+54×1399×57144÷18×72125×32372+28×2626×99+2626×25×4015624-221×35....
脱式计算,能简算的要简算46×13+54×13 99×57 144÷18×72 125×32 372+28×26 26×99+26 26×25×40 15624-221×35.
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(1)46×13+54×13
=(46+54)×13
=100×13
=1300
(2)99×57
=(100-1)拍凳×57
=100×57-1×57
=5700-57
=5643
(3)144÷18×72
=8×72
=576
(4)125×32
=125×8×4
=1000×4
=4000
(5)372+28×26
=372+728
=1100
(6)26×99+26
=26×(99+1)
=26×100
=2600
(7)御贺锋26×25×40
=26×(镇晌25×40)
=26×1000
=26000
(8)15624-221×35
=15624-7735
=7889
=(46+54)×13
=100×13
=1300
(2)99×57
=(100-1)拍凳×57
=100×57-1×57
=5700-57
=5643
(3)144÷18×72
=8×72
=576
(4)125×32
=125×8×4
=1000×4
=4000
(5)372+28×26
=372+728
=1100
(6)26×99+26
=26×(99+1)
=26×100
=2600
(7)御贺锋26×25×40
=26×(镇晌25×40)
=26×1000
=26000
(8)15624-221×35
=15624-7735
=7889
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