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1.2÷0.75+0.8的脱式计算

①1+0.45÷0.9-0.75=1+0.5-0.75=0.75;②[1-( 1 2 - 1 3 )]÷ 5 8 =[1- 1 6 ]× 8 5 ,= 5 6 × 8 5 ,= 4 3 ;③( 4 5 + 1 4 )÷ 7 3 + 3 10 = 21 20 × 3 7 + 3 10 ,= 9 20 + 3 10 ,= 3 4 .

6.8×0.75÷0.5,=5.1÷0.5,=10.2,13.75÷0.125-2.75,=110-2.75,=107.25,1.53+23.4÷7.2,=1.53+3.25,=4.78.

0.35*7.8+0.75*7.8_0.78 =0.35×7.8+0.75×7.8-7.8×0.1 =7.8×(0.35+0.75-0.1) =7.8×1 =7.8 不懂请追问

脱式计算 6.8X0.75÷0.5 =5.1÷0.5 =10.2

30.8÷[14-(9.85+1.07)] [60-(9.5+28.9)]÷0.18 2.881÷0.43-0.24×3.5 20×[(2.44-1.8)÷0.4+0.15] 28-(3.4 1.25×2.4) 2.55×7.1 2.45×7.1 777×9 1111×3 0.8×〔15.5-(3.21 5.79)〕 (31.8 3.2×4)÷5 31.5×4÷(6 3) 0.64×25×7.8 2.2 2÷2.5 2.5÷2 ...

(1)8/9×[7/8-(7/16-1/8)](2)10×3/4+17×75%-7×0. =8/9×[7/8-7/16+1/8] =8/9×[7/8+1/8-7/16] =8/9×[1-7/16] =8/9×9/16 =1/2 (2)10×3/4+17×75%-7×0.75 [3/4=75%=0.75] =0.75×(10+17-7) =0.75×20 =15

17×40= 100-63= 3.2+1.68= 2.8×0.4= 14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35= 10-5.4= 4÷20= 3.5×200= 1.5-0.06= 0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54= 1.01×99= 420÷35= 25×12= 135÷0.5= 3/4 + 1/4 = 2 + 4/9 = 3...

1)25%*132+1/4*8 2)32*0.125*25 =1/4*132+1/4*8 =(4+8)*0.125*25 =1/4*(132+8) =(4*25)*(8*0.125) =1/4*140 =100*1 =35 =1000 3)75%*76+25*4+0.75*12 =3/4*76+3/4*12+25*4 =3/4*88+100 =166 4)3200*1/8÷2/5+1270 5)(2/3+4/5)*7/6 =400*5/2+1270...

1、用竖式计算 0.396÷1.2= 0.756÷0.36= 15.6×13= 0.18×15= 0.025×14= 3.06×36= 0.04×0.12= 3.84×2.6≈ 5.76×3= (保留一位小数) 7.15×22 90.75÷3.3 3.68×0.25 16.9÷0.13 1.55÷3.9 3.7×0.016 13.76×0.8= 5.2×0.6 8.4×1.3 6.4×0.5 4.48×0.4 5.25...

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