化简比并求比值.(1)12:30 (2)0.4:3.2 (3)
化简比并求比值.(1)12:30(2)0.4:3.2(3)23:518....
化简比并求比值.(1)12:30 (2)0.4:3.2 (3) 2 3 : 5 18 .
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峭啡侠41
推荐于2016-04-22
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(1)12:30, =(12÷6):(30÷6), =2:5; 12:30, =2:5, 2÷5, = .
(2)0.4:3.2, =(0.4×5):(3.2×5), =2:16, =1:8; 0.4:3.2, =1:8, =1÷8, = .
(3) : , =( ×18):( ×18), =12:5; : , =12:5, =12÷5, = . |
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