Question

3.6*31又五分之二+43.9*6有五分之二+6

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Answer 1

应该是400

追问

过程 简便计算

追答

3.6×31又2/5+43.9×6又2/5+6
= 3.6×31+3.6×2/5+43.9×6+43.9×2/5+6
=（3.6×31+43.9×6）+（3.6×2/5+43.9×2/5）+6
=（111.6+263.4）+【2/5×（3.6+43.9）】+6
= 375+2/5×47.5+6
= 375+19+6
= 400