直接写出得数
- = | 0.9-0.26= | ÷ = | × = |
2- = | 130×20= | 11.3×7.05= | 44÷ = |
0÷ = | 5-1.4-1.6= | 12×( + )= | 46×39≈ |
解:
- = , | 0.9-0.26=0.64, | ÷ = , | × = , |
2- =1 , | 130×20=2600, | 11.3×7.05=79.665, | 44÷ =55, |
0÷ =0, | 5-1.4-1.6=2, | 12×( + )=14, | 46×39≈2000. |
故答案为:
,0.64,
,
,1
,2600,79.665,55,0,2,14,2000.
分析:本题根据分数、小数、整数的加法、减法、乘法、除法的运算法则计算即可.
5-1.4-1.6可根据一个数减两个数,等于减去这两个数的和的减法性质计算;
12×(
+
)可根据乘法分配律计算;46×39可按50×40估算.
点评:完成有关于分数的计算时要注意通分约分,完成有关于小数的计算时,要注意小数点位置的变化.
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