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8.36*10.1怎样算简便

8.36x10.1 =8.36x(10+0.1) =8.36x10+8.36x0.1 =83.6+0.836 =84.436

36-8 =36-10+2 =26+2 =28

36.2-(12.1-10.8)用简便算法怎么算 =36.2+10.8-12.1 =47-12.1 =34.9

计算 36.7x2.1+10.8 =36.7x(2+0.1)+10.8 =36.7x2+36.7x0.1+10.8 =73.4+3.67+10.8 =87.87

36.2-(12.1-10.8)用简便算法 36.2-(12.1-10.8) =36.2+10.8-12.1 =47-12.1 =34.9

36.8-3.9-6.1 =36.8-(3.9+6.1) =36.8-10 =26.8

(1)36÷1.25÷8 =36÷(1.25×8 )=36÷10=3.6(2)8.43×5.7+4.3×8.43=8.43×(5.7+4.3)=8.43÷10=0.843(3)9.88÷(8.5-4.7)=9.88÷3.8=2.6(4)9.45÷(2.7-1.8)×4.6=9.45÷0.9×4.6=10.5×4.6=48.3

结果为(即第一步的结果,第二步的结果依次类推)1/2,3/5,2/3,5/7,3/4,7/9…… 发现规律 1/2,2/3,3/4,的分子分母加1。 3/5,5/7,7/9,的分子分母加2。 加到1/45时,一共出现7个结果,即是奇数个结果,那么应该是1/2,2/3,3/4,4/5中的4/...

解:36.7乘2.1+10.8 = 36.7 × 2.1 + 10.8 = (36×10 + 7)/10 × (2×10 + 1)/10 + (10×10 + 8)/10 = 367/10 × 21/10 + 108/10 = 7707/100 + 1080/100 = 8787/100 = 87.87

3-8分之5÷36分之25-10分之1 解:原式=3-8分之5×25分之36-10分之1 =3-10分之9-10分之1 =3-(10分之9+10分之1) =3-1 =2

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