题目内容

【题目】7.2×2.3+3.6×5.4=(  )

A.4.65B.4.5C.36D.189

【答案】C

【解析】

7.2×2.3+3.6×5.4

=3.6×2×2.3+3.6×2×2.7

=3.6×(2.3+2.7)×2

=3.6×5×2

=3.6×(5×2)

=3.6×10

=36

故选:C.

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