求比值和化简比.12:28; 2.4:1.5; 24
求比值和化简比.12:28;2.4:1.5;246;56:23....
求比值和化简比.12:28; 2.4:1.5; 24 6 ; 5 6 : 2 3 .
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枫默冻冻82汴
2015-01-30
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12:28 =12÷28 = ; 12:28 =(12÷4):(28÷4) =3:7.
2.4:1.5 =2.4÷1.5 = ; 2.4:1.5 =(2.4×10÷3):(1.5×10÷3) =8:5.
=24÷6 =4; =(24÷6):(6÷6) =4:1.
: = ÷ = ; : =( ×6):( ×6) =5:4. |
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