题目内容
囗算:
| 26+74= | 540-70= | 60+740= | 3×3×3= | 12+16÷4= |
| 39+39= | 250+200= | (8+2)×3= | 17+15+3= | 20÷2+30= |
| 41-3= | 700+400= | 3×4×2= | 9+27-8= | 31+40-45= |
| 29+64= | 870-300= | 55÷8= | 99-66-30= | 7+7+14= |
| 55÷5= | 63-36+2= | 99÷33= | 6×8+68= | 500×2×2+2= |
| 解:26+74=100, | 540-70=470, | 60+740=800, | 3×3×3=27, | 12+16÷4=16, |
| 39+39=78, | 250+200=450, | (8+2)×3=30, | 17+15+3=35, | 20÷2+30=40, |
| 41-3=38, | 700+400=1100, | 3×4×2=24, | 9+27-8=28, | 31+40-45=26, |
| 29+64=93, | 870-300=570, | 55÷8=6…7, | 99-66-30=3, | 7+7+14=28, |
| 55÷5=11, | 63-36+2=29, | 99÷33=3, | 6×8+68=116, | 500×2×2+2=2002. |
分析:根据整数加减乘除的计算方法进行计算即可.
点评:口算时,注意运算符号和数据,然后再进一步解答即可.
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