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8-1.2×1.5+742÷(2.544÷2.4)怎么算

8-1.2x1.5+742÷(2.544÷4) =8-1.8+742÷0.636 =6.2+1166.66667 =1172.86667

=(100÷2-1)*100+50=4900+50=4950⑴运用加法...1.9×7.5×8 6.2×0.8×2.5 4.3×1.5×6 ...4.6×6.4 0.72×23+77×0.72 2.6×32+32×2.4...

5 = (31.8 + 12.8)÷5 = 44.6÷5 = 8....24÷2.4-2.5×0.8 =10 -2=8405×(3213-3189)...(2.5-0.25)×0.4 9.16×1.5-0.5×9.16 3.6...

24÷2.4-2.5×0.8 671×15-974 469×12+1492 405×(3213-3189) 12*(1/...[60-(9.5+28.9)]÷0.18 20×[(2.44-1.8)÷0.4+0.15] 0.8×[(...

解:1÷(1-10%)-1 =1/9 ≈11.11% 答:增加11.11% 2.甲对乙说:"当...10.甲、乙两人相距22.5千米,并分别以2.5千米/时与5千米/时的速度同时相向而...

1+1=2(份) 每种分法差额有几支? 10÷2=5(...[(7.1-5.6)×0.9-1.15]÷2.5 81432÷(13×52...44-1.8)÷0.4+0.15] 28-(3.4 1.25×2.4) ...

1.44÷(6.3-4.8)×2.5 =1.44x2.5÷1.5 =4.8x0.3x5x0.5÷(5x0.3) =4.8x0.5 =2.4

2.4÷20= 3.5×200= 4.1.5-0.06= 5.0.75÷15...1. 1-2+3-4+5-6+7-8+9-10+11-12+...+...7 8.54÷2.5÷0.4 3.83×4.56+3.83×5.44 ...

÷20=0.2,3.5×200=700,1.5-0.06=1.440.75÷...+1/2-1/6=1/2,7.5-(2.5+3.8)=1.2,7/8+....44-1.8)÷0.4+0.15]28-(3.4+1.25×2.4)...

4÷20=0.2, 3.5×200=700, 1.5-0.06=1.44 ...2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/...24÷2.4-2.5×0.8 (4121+2389)÷7 671×15-...

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