题目内容
直接写得数. 56+2.4= 58.4 58.4 |
1-0.48= 0.52 0.52 |
0.81÷3= 0.27 0.27 |
0.5×2.4= 1.2 1.2 |
4×0.24+0.24= 1.2 1.2 |
5-5= 0 0 |
3.2÷0.4= 8 8 |
0.05×20= 1 1 |
8.2÷0.01= 820 820 |
6.8-1.3-2.7= 2.8 2.8 . |
分析:4×0.24+0.24运用乘法分配律简算;8.2÷0.01直接移动小数点的位置;6.8-1.3-2.7根据连续减去两个数等于减去这两个数的和简算;其它题目按照运算法则直接计算.
解答:解:56+2.4=58.4,1-0.48=0.52,0.81÷3=0.27,
0.5×2.4=1.2,4×0.24+0.24=1.2,5-5=0,
3.2÷0.4=8,0.05×20=1,8.2÷0.01=820,
6.8-1.3-2.7=2.8.
故答案为:58.4,0.52,0.27,1.2,1.2,0,8,1,820,2.8.
0.5×2.4=1.2,4×0.24+0.24=1.2,5-5=0,
3.2÷0.4=8,0.05×20=1,8.2÷0.01=820,
6.8-1.3-2.7=2.8.
故答案为:58.4,0.52,0.27,1.2,1.2,0,8,1,820,2.8.
点评:此题考查了基本的小数的加减法,计算时要细心,注意小数点的位置.
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