问题 填空题

计算2.5×7.5+1.3×7.5+45×0.75=______.

答案

2.5×7.5+1.3×7.5+45×0.75

=2.5×7.5+1.3×7.5+4.5×7.5,

=(2.5+1.3+4.5)×7.5,

=8.3×7.5,

=62.25.

故答案为:62.25.

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