| 直接写出得数 0.9+0.4= | 1.8+0.9= | 1-0.3= | 1.5-0.7= |
| 3-2.6= | 5.3+4.6= | 4+3.5= | 7-2.9= |
+ = | - = | +1= | - = |
| 10-9×0= | 3×5×40= | 3×7×4= | 330÷3×10= |
| 0.9+0.4=1.3, | 1.8+0.9=2.7, | 1-0.3=0.7, | 1.5-0.7=0.8, |
| 3-2.6=0.4, | 5.3+4.6=9.9, | 4+3.5=7.5, | 7-2.9=4.1, |
+ = , | - = , | +1=1 , | - = , |
| 10-9×0=10, | 3×5×40=600, | 3×7×4=84, | 330÷3×10=1100. |
分析:10-9×0先算乘法,再算减法;3×5×40,3×7×4,330÷3×10,按照从左到右的顺序计算;其它题目根据计算法则直接求解.
点评:本题考查了基本的运算,计算时要注意小数点的位置.
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