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4题脱式计算 帮帮忙啊大家 拜托了 好心人来啊 答的...

一,2.25×4.8+77.5×0.48 = 2.25×4.8+7.75×4.8 = (2.25+7.75)×4.8 = 10×4.8 = 48 63×9分之7-9分之2×63 =63(7/9-2/9) =63*(5/9) =7*5 =35 4÷2分之1×(8分之5-4分之1) =4/(1/2)*(5/8-2/8) =4*2*(3/8) =3 )(17分之8+13分之8)×8分之13×8分之17 =(...

百度文库里有的

672-36+64 = 600+72-36+64 =600+36+36-36+64 =600+36+64 =600+100 =700

1、 原式=6.3(99+1)=6.3×100=630 2、 原式=0.84+7.73-0.84=7.73 3、 原式=15.7-(5.7+4.3)=15.7-10=5.7

1.6÷ 3/8 – 3/8 ÷6 =1/6x(3/8-3/8) =1/6x0 =0 2.4/7 × 5/9 + 3/7 × 5/9 =(4/7+3/7)x5/9 =1x5/9 =5/9 3.5/2 -( 3/2 + 4/5 ) =5/2-3/2-4/5 =1-4/5 =1/5 4.6 ×( 1/2 + 2/3 ) =6x1/2+6x2/3 =3+4 =7 5.8 × 4/5 + 8 × 11/5 =8x(4/5+11/5) =8x3 =24...

-------------------------------------四年在下面----------------------------------------------------------------- 77-46+32 65-38+26 79+19-56 58-36+27 84-27+16= 4+27-16 93+23+94 69-(39-23) 99+(25-24) 77-76+32 61-38+26 79+19-16 ...

32×125×25=4×8×125×25=(4×25)×(8×125)=100×1000=1000009048÷26=(2600+2600+2600+1248)÷26=2600÷26+2600÷26+2600÷26+1248÷26=100+100+100+48=3482881÷43=(1290+1591)÷43=1290÷43+1591÷43=30+37=673.2×42.3×3.75-12.5×0.423×16=3.2×42.3×3...

43×2+25 16×7×9 (24+56) ×7 64÷8+486 36÷4+125 456-72÷8 568+56×9 28×(46-37) 18×5×6 213×3-39 376-96÷8 64×7÷4 (47+25) ×4 854÷(56-49) 76+24×5 50+60÷5 72-20×3 56-46÷2 (42+38) ×4 40×9÷6 60×3+20 75÷〔138÷(100-54)〕 85...

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