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7.5+2.5=5.2÷1.3=1.8×0.5=4.5÷0.1=
数学公式+数学公式=数学公式-数学公式=数学公式×数学公式=数学公式+数学公式)×10=
数学公式+数学公式=1+2÷3=数学公式×数学公式=数学公式÷数学公式=

7.5+2.5=10,
5.2÷1.3=4,
1.8×0.5=0.9,4.5÷0.1=45,
+=-=×=+)×10=
+=71+2÷3=1×=÷=

分析:(+)×10,先算括号里面的加法,再算括号外面的乘法;
+、1+2÷3,先算除法,再算加法;
×,从左往右按顺序计算;
其他算式按照整数、分数、小数四则运算的方法计算.
点评:此题考查看算式直接写得数,根据数据的特点,快速准确的算出得数即可.
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