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0.1×45×10×12=?用简便方法计算

0.1×45×10×12 =(0.1×10)×45×(3×4) =1×45×4×3 =180×3 =540 这个方法最简便

(1)1+0.45÷0.9-78=1+0.5-0.875=1.5-0.875=0.625(2)2.5×25-0.12÷13+8.36=1-0.12×3+8.36=1-0.36+8.36=0.64+8.36=9(3)(712+58-1136)×72=712×72+58×72-1136×72=42+45-22=65(4)1.4+(38-0.25)÷114=1.4+(38-14)÷114=1.4+18×45=1.4+110=1....

4.2×10.1-0.42 =4.2×10.1-4.2×0.1 =4.2×(10.1-0.1) =4.2×10 =42 希望对你有帮助,满意请及时采纳, 你的采纳是我回答的动力!

8.7x10.1 =8.7x(10+0.1) =8.7x10+8.7x0.1 =87+0.87 =87.87

10.1X4.2 =(10+0.1)X4.2 =10X4.2+0.1×4.2 =42+0.42 =42.42

简便计算:0.8x0.25x0.4x12.5=(0.8x12.5)x(0.25x0.4)=10x0.1=1 1、化成2×1.5×1.7×7,化成(0.8×12.5)×(0.4×0.25),把1、5分成1×0、5,然后用0、5×3、4=1、7×7×1结果是11、9。 2、加法交换律:a+b=b+a,两个加数交换位置,和不变,这叫做加法交换...

4.32×10.1-0.432 =4.32×10+4.32×0.1-0.432 =43.2+0.432-0.432 =43.2

3.67×10.1-3.67×0.1 =3.67x(10.1-0.1) = 3.67×10 =36.7 很高兴能帮助到你。若满意记得“采纳为满意答案”喔!祝你开心~O(∩_∩)O~

10.1-10.1÷1.01×0.1 =10.1-1×0.1 =10.1-0.1 =10

(1)45.07+(4.93+8.62),=45.07+13.55,=58.62;(2)12.5×(80+0.8),=12.5×80+12.5×0.8,=1000+10,=1010;(3)34.26+47.7-55.3+2.53,=34.26+(47.7+2.53)-55.3,=34.26+50.23-55.3,=84.49-55.3,=29.19;(4)13.2-180÷45×2.6,=13.2...

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