| 直接写出得数. 7.8÷0.01= | 5-10÷3= | (2-0.02)×0.2= | (240-96)÷12= | 1.5×0.6+0.1= |
4- + - = | ×![]() × = | 5.6+8×1.25 | ×![]() = | (0.25- )÷6 = |
| 解:7.8÷0.01=780, | 5-10÷3=1 , | (2-0.02)×0.2=0.396, | (240-96)÷12=12, | 1.5×0.6+0.1=1, |
4- + - =3 , | ×![]() × = , | 5.6+8×1.25=15.6, | ×![]() =7, | (0.25- )÷6 =0. |
分析:(2-0.02)×0.2运用乘法分配律简算;(240-96)÷12先算小括号里面的减法,再算括号外的除法;1.5×0.6+0.1先算乘法,再算加法;4-
+
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运用加法结合律简算;
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×
先把除法变成乘法,再运用乘法结合律简算;5.6+8×1.25先算乘法,再算加法;
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按照从左到右的顺序计算;(0.25-
)÷6
先算小括号里面的减法,再算括号外的除法.点评:本题考查了基本的运算,注意运算顺序和运算法则,灵活运用所学的运算定律进行简便计算.
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