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0.67×1.9 0.33×1.9脱式计算

0.67x1.9+0.33x1.9 =(0.67+0.33)x1.9 =1x1.9 =1.9

解答:解:0.77+0.33=1.1 7÷1.4=5 9+29=929 1-0.09=0.91 5656÷56=101 32÷53×0=031÷1000=0.031 2.6-1.7=0.9 23÷7=221 15×50=750 0.12×100=1 1-16+56=53

①0.24+1.33-0.63,=1.57-0.63,=0.94,②2.58-(3.5-2.4),=2.58-1.1,=1.48;③19.92-14.4-0.92,=19.92-0.92-14.4,=19-14.4,=4.6;④54÷(3.94+6.86),=54÷10.8,=5;⑤3.6÷0.4-1.2×5,=9-6,=3;⑥3.4×7.8÷3.9,=26.52÷3.9,=6.8.

2.7×1.2 27×0.23 0.27×33的脱式计算简便 =2.7x(1.2+10x0.23+0.1x33) =2.7x(1.2+2.3+3.3) =2.7x6.8 =18.36

0.8/33/1.25 =0.024/1.25 =0.0192

4.02-3.5+0.98 7.08-0.74-1.26 7.75×[20÷(3.24-3.04)] 4.05÷0.81+2.4 3.7×4.5-4.4×3.7 0.034×0.5×0.6 28.92-(13.2+8.92) 1.46×5+12.8÷0.4×7.5 7.6×〔(25.3-9.7)÷0.3〕×8.5 12.25-3.1+0.85-6.17 1.9-1.9×0.9)÷(3.8-2.8) 15.7×1.25×8 24.7...

1.08x0.8÷0.27 =0.864÷0.27 =3.2

几位数乘除?

86.7*0.356 +1.33*3.56 =8.67*3.56+1.33*3.56 =3.56*(8.67+1.33) =3.56*10 =35.6

80.3-33.3×0.5÷0.37,=80.3-16.65÷0.37,=80.3-45,=35.3;( 3 4 - 2 3 )×12÷0.1,=( 3 4 ×12 - 2 3 ×12 )÷0.1,=(9-8)÷0.1,=1÷0.1,=10; 3 8 ×[ 8 9 ÷( 5 6 + 3 4 )],= 3 8 ×【 8 9 ÷( 10 12 + 9 12 )】,= 3 8 × ( 8 9 ÷ 19 12 ...

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