5.6乘0.7加0.2乘5.6加0.56-搜答案-搜搜做题作业网

1.25乘9.1乘0.7加1.25乘9.1乘0.1=1.25乘9.1乘（0.7加0.1）=1.25X9.1X0.8=1.25X0.8X9.1=9.1

4.4+4.4x12+13x5.6=4.4x(1+12)+5.6x13=4.4x13+5.6x13=(4.4+5.6)x13=10x13=130

=46.3×0.56+53.8×0.56-0.1×0.56=(46.3+53.8-0.1)×0.56=100×0.56=56

9.13×0.2+91.3×0.08=9.13×0.2+9.13×0.8=9.13╳（0.2+0.8）=9.13

5.6×8.8+0.56×12=5.6×8.8+5.6×1.2=5.6×(8.8+1.2)=5.6×10=56

7.4×5.6+7.6×5.4-7.4=7.4×5.6+（7.4+0.2）×5.4-7.4=7.4×5.6+7.4×5.4+0.2×5.4-7.4=7.4（5.6+5.4-1）+0.2×5.4=7.4

设那数为X0.27*5.6+5.6X+5.6*0.25=0.78*0.565.6*(0.27+X+0.25)=0.078*5.60.52+X=0.078X=-0.442

解题思路：本题主要根据一个因数扩大多少倍，另一个因数就缩小多少倍，积不变，然后化成相同的因数，再根据乘法的分配律进行解答即可.解题过程：

5.6*0.7+0.2*5.6+0.56=5.6*0.7+0.2*5.6+5.6*0.1=5.6*（0.7+0.2+0.1）=5.6*1=5.6

太简单了!就是0.45乘5.6加4.5乘0.54减0.54=0.45乘5.6加0.45乘5.4减0.54=0.45乘（5.6加5.4）减0.54=0.45乘11减0.54=4.95减0.54=4.41

5.6*69.32+138.64*0.05+693.2*0.43=5.6*0.1*693.2+693.2*0.2*0.05+693.2*0.43=0.56*693.2+693.2*0.01+693.2

9.9*5.6+0.56=9.9*0.56*10+0.56=99*0.56+0.56=0.56*(99+1)=0.56*100=56再问：4.4*5.5-44*0.33-0.44*22

等于0.56乘33加0.56乘77减0.56再问：得数是多少再答：61.04

5.6*69.32+138.64*0.05+693.2*0.43=5.6*69.32+69.32*0.1+69.32*4.3=69.32*(5.6+0.1+4.3)=69.32*10=693.2

2.61*39.5+0.7*261+9.05*26.1=26.1*3.95+26.1*7+26.1*9.05=26.1*(3.95+7+9.05)=26.1*20=522

28×221.6﹣28×16=28×﹙221.6-16﹚=28×205.6=5756.85.6×1.7﹢0.5×83=0.5×11.2×1.7+0.5×83=0.5×﹙19.04﹢83﹚=0.5×10

0.9999×0.7+0.1111×2.7=0.1111×9×0.7+0.1111×2.7=0.1111×6.3+0.1111×2.7=0.1111×(6.3+2.7)=0.1111×9=0.9999

想要简便?再问：对再答：给好评吗？再问：给再答：等等再答：=0.38x(9.3+0.7)=0.38x10=3.8

46.1×0.56＋5.38×5.6＋1×0.056＝46.1×0.56＋53.8×0.56＋0.1×0.56＝0.56×（46.1＋53.8＋0.1）＝0.56×100＝56