脱式计算,能简算的要简算46×13+54×13 99×5...

2025-03-09 21:20:24
推荐回答(1个)
回答1:

(1)46×13+54×13
=(46+54)×13
=100×13
=1300

(2)99×57
=(100-1)×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)26×25×40
=26×(25×40)
=26×1000
=26000

(8)15624-221×35
=15624-7735
=7889