题目内容
用简便方法计算. 15-0.3= |
6-0.5= | 3.9+12.1= | 2.13+14= | 0.91+1.25= |
10-0.76= | 3.99-0.9= | 0.567+4.44= | 0.37+0.6= | 7.46+2.54= |
1-0.08= | 45.9+1= | 6.87-3.25= | 0.25+0.75= | 0.78+0.22= |
6.1-5.7= |
分析:根据小数加减乘除的计算方法进行计算.
解答:解:
15-0.3=14.7, | 6-0.5=5.5, | 3.9+12.1=16, | 2.13+14=16.13, | 0.91+1.25=2.16, |
10-0.76=9.24, | 3.99-0.9=3.09, | 0.567+4.44=5.007, | 0.37+0.6=0.97, | 7.46+2.54=10, |
1-0.08=0.92, | 45.9+1=46.9, | 6.87-3.25=3.62, | 0.25+0.75=1, | 0.78+0.22=1, |
6.1-5.7=0.4. |
点评:口算时,注意运算符号和数据,然后再进一步计算.
练习册系列答案
相关题目