| 3.5÷0.7= | 1- - = | + + = |
+ = | 7÷8= | 3.06×100= |
| 3.4+1.6= | 4.3-0.8= | - = |
| 3.5÷0.7=5, | 1- - =0, | + + =1, |
+ = , | 7÷8= , | 3.06×100=306, |
| 3.4+1.6=5, | 4.3-0.8=3.5, | - = . |
,
,306,5,3.5,
.分析:1-
-
根据连续减去两个数,等于减去这两个数的和简算;
+
+
按照从左到右的顺序计算;3.06×100把3.06的小数点向右移动2位即可;其它题目根据运算法则直接求解.点评:本题考查了基本的运算,计算时要细心,注意小数点的位置.
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