题目内容
3×0.15= | 42%÷21%= | 0.27÷0.3= | 7-0.35= |
10-1/20= | ![]() ![]() ![]() | 9.8-3.2-5.8= | 0.68++0.32= |
1.25×99×8= | ![]() |
解:
3×0.15=0.45, | 42%÷21%=2, | 0.27÷0.3=0.9, | 7-0.35=6.65, |
10-1/20=9![]() | ![]() ![]() ![]() ![]() | 9.8-3.2-5.8=0.8, | 0.68++0.32=1, |
1.25×99×8=990, | ![]() ![]() |
分析:本题根据小数,分数的加法、减法、乘法、除法的运算法则计算即可.
9.8-3.2-5.8可根据一个数减两个数等于减去这两个数的和的减法性质计算.
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点评:完成本题要注意分析式中数据的特点及内在联系,然后选择合适的方法进行计算.
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5.28t-1.99t= | 0.6+89= | 5.7×0.1= | 1.6÷0.4= |
6÷0.3= | 5÷0.25= | 0.45×3= | 0.35×8= |
7.1-0.76= | 1.2×0.3= | 0.76÷4= | 1.9×0.8= |
4.2-2.8= | 7.2÷1.6= | 19.8+3.2= | 18-17.45= |
4.5+1.5= | 0.75x+0.25x= | 2.5×4= | 0.46÷2= |
0.7×1.4= | 1-0.92= | 8×0.125= | 3.4÷20= |
10a-1.8a= | 4.8×0.2= | 0.3÷0.15= | 0.15÷2= |
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