41.2X8.1+11X9. 25 + 537X0.19=()
2023-05-26
A. 527. 8
B. 536. 3
C. 537. 5
D. 539. 6
参考答案:C
B. 536. 3
C. 537. 5
D. 539. 6
参考答案:C
把8.1,11和0.19拆分成(8+0.1)、(10+1)和(0.2—0.01),即41.2X8.1+11X9.25+537X0.19=41.2X(8+0.1)+(10+1)X9.25+537X(0.2—0.01)=537.5。
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