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简算.25×49×425×32×12588×12557×29+57×72-57.

题目详情
简算.
25×49×4                                 
25×32×125
88×125                                   
57×29+57×72-57.
▼优质解答
答案和解析
(1)25×49×4
=(25×4)×49
=100×49
=4900

(2)25×32×125
=25×(4×8)×125
=(25×4)×(8×125)
=100×1000
=100000

(3)88×125                                   
=11×8×125
=11×(8×125)
=11×1000
=11000

(4)57×29+57×72-57
=57×(29+72-1)
=57×100
=5700