(1.25-0.125)×8
=1.25×8-0.125×8
=10-1
=9
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(1.25-0.125)x8 = (10/8 - 1/8)x8 = 9
(1.25-0.125)x8 = 10-1 = 9
要记住:125x8=1000,12.5x8=100,1.25x8=10,0.125x8=1 . . . . .
(1.25-0.125)×8=1.25×8-0.125×8=10-1=9
(1.25-0.125)×8
=1.25×8-0.125×8
=10-1
=9
9是答案是九。