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简介:
125×(17×8)×4
=125×8×4×17
=1000×68
=68000
375×480+6250×48
=480×(375+625)
=480×1000
=480000
25×16×125
=25×2×8×125
=50×1000
=50000
13×99
=13×(100-1)
=1300-13
=1287
75000÷125÷15
=75×1000÷125÷15
=75÷15×1000÷125
=40
7900÷4÷25
=7900÷(4×25)
=7900÷100
=79
150×40÷50
=150÷50×40
=3×40
=120
5600÷(25×7)
=56×100÷25÷7
=56÷7×100÷25
=32
210÷42×6
=210÷7÷6×6
=30÷6×6
=30
39600÷25
=396×100÷25
=396×4
=1584