题目内容
看谁算得又对又快. 2.5-1.2= |
4×0.5= | 6.4+2.5= | 0÷2.8= |
2.5×0.4= | 8-2.5= | 5+5.5= | 1÷100= |
9-8.9= | 7.2+2.8= | 6.09-1.98= | 0.4×5= |
0×0.1= | 2.5÷10= | 8.05+5= | 8×0.25= |
2.35+7.65= | 5×2.4= | 0.69÷0.03= | 3+7.7= |
分析:依据小数四则运算计算方法解答.
解答:
故答案依次为:1.3,2,8.9,0,1,5.5,10.5,0.01,0.1,10,4.11,2,0,0.25,13.05,2,10,12,23,10.7.
解:2.5-1.2=1.3, | 4×0.5=2, | 6.4+2.5=8.9, | 0÷2.8=0, |
2.5×0.4=1, | 8-2.5=5.5, | 5+5.5=10.5 | 1÷100=0.01 |
9-8.9=0.1, | 7.2+2.8=10, | 6.09-1.98=4.11, | 0.4×5=2, |
0×0.1=0, | 2.5÷10=0.25, | 8.05+5=13.05 | 8×0.25=2, |
2.35+7.65=10, | 5×2.4=12, | 0.69÷0.03=23, | 3+7.7=10.7. |
点评:本题主要考查学生对于小数四则运算计算方法掌握.
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