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0.56x7.8%0.56x5.8脱式计算

0.56X(7.8-5.8)=1.12

0.56X(7.8-5.8)=1.12

12.5x0.56x0.4x0.8x1250 =(12.5×0.8)×(0.4×1250)×0.56 =10×500×0.56 =5000×0.56 =280

69÷0.56x0.32 =69x0.32÷0.56 =69x0.4x0.8÷(0.7x0.8) =27.6÷0.7 =276/7 =39又7分之3

1. 4×102-2×49 =408-2×49 =408-98 =310 2. 25×(2+4) =25×2+25×4 =50+100 =150 3. 12×5+8 =60+8 =68 4. 99×101 =99×(100+1) =99×100+99×1 =9900+99 =9999 5. 25×(78×4) =25×4×78 =100×78 =7800 6. (25+12)×4 =25×4+12×4 =100+48 =148 7. ...

6.8×0.56+4.4×0.68 =6.8x0.56+0.44x6.8 =6.8x(0.56+0.44) =6.8x1 =6.8

3.14×102 = 3.14x(100+2) =3.14x100+3.14x2 =314+6.28 =320.28 0.125×7.41×80 = 0.125x80x7.41 =10x7.41 =74.1 (3.2+0.56)÷0.8 =3.2÷0.8+0.56÷0.8 =4+0.7 =4.7

180×0.56+(259-180)×0.61+(270-259)×0.86 =180×0.56+259×0.61-180×0.61+270×0.86-259×0.86 =270×0.86-259×(0.86-0.61)-180×(0.61-0.56) =270×0.86-259×0.25-180×0.06 =232.2-64.75-10.8 =156.65 望采纳

脱式计算. 408-12×24 (46+28)×60 42×50-1715÷5 32+105÷5 (108+47)×52 420×(327-238) (4121+2389)÷7 671×15-974 469×12+1492 405×(3213-3189) 5000-56×23 125×(97-81) 6942+480÷3 304×32-154 20+80÷4-20= 100÷(32-30)×0= 25×4-12...

0.56除以0.28+2.8脱式计算 =2+2.8 =4.8

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