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0.75÷[(0.3十2.2)x5]脱式计算

(1)6.8×0.75÷0.5=5.1÷0.5=10.2(2)0.94÷1.25÷0.8=0.94÷(1.25×0.8)=0.94÷1=0.94(3)0.5×4÷0.5×4=(0.5÷0.5)×(4×4)=1×16=16(4)29.4÷7+3.6=4.2+3.6=7.8(5)(7.5-2.3×0.4)÷0.01=(7.5-0.92)÷0.01=6.58÷0.01=658(6)9÷[0.3×(8-6.5)...

(1)(66-32×1.2)÷0.25,=(66-38.4)÷0.25,=27.6÷0.25,=110.4,(2)10×34+17×75%-7×0.75,=10×0.75+17×0.75-7×0.75,=(10+17-7)×0.75,=20×0.75,=15,(3)0.25×[515×(3-2.5×78)],=0.25×[515×(3-3516)],=0.25×[515×1316],=14×26...

6.9×0.75÷0.5 =6.9x1.5 =10.35

(1)(2.5×45)÷(14×0.8)?0.75÷340,=2÷0.2-10,=10-10,=0;(2)1417×(223?34)+1112÷1721,=2117×2312+1112×2117,=(2312+1112)×2117,=3412×2117,=72;(3)718×4.5+3.75÷16.2×215,=1.75+154×233×115,=1.75+0.5,=2.25;(4)[1?(112+115...

解:0.75÷0.25=3 0.125×8=1 4.8÷0.3=16 0.86÷2=0.43 0.56÷28=0.02 0.36÷0.4=0.9 0.64÷0.8=0.8 0.7×9=6.3 3.6÷24=0.15 0.8×1.1=0.88 7.2+12.8=20 46.7-3.8=42.9 12.8÷4=3.2 5.2÷13=0.4 12.5÷5=2.5 1.64+4.1=5.74 10÷20=0.5 24÷15=1.6 8.65×10=86...

(1)4.8+4.2÷60, =4.8+0.07, =4.87; (2)279+141+121, =(279+121)+141, =300+141, =441; (3)25×23×4, =(25×4)×23, =100×23, =2300; (4)102×88-2×88, =(102-2)×88, =100×88, =8800; (5)(40+4)×25, =40×25+4×25,...

0.372×1000=372 3.2-0.9=2.3 0.75÷34=1 13?15=215 8.4÷0.7=12 34×815=25 0.2×0.3=0.06 2-2÷3=43 0.125×8=1 916÷34=34

计算如下: 0.75×18÷0.15=75×18÷15=5×15×18÷15=5×2×9=10×9=90 。

(1)1438?234×2.4,=1438-635,=73140;(2)(0.75÷3-0.1)×123,=(0.25-0.1)×123,=0.15×53,=0.25;(3)4.9÷[(1412-0.5×7)÷147],=4.9÷[(1412-3.5)÷147],=4.9÷[11÷117],=4.9÷7,=0.7.

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