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8.3%2.63的简便计算

8.3-2.63=5.67没有简算,直接计算

8.3-2.6-0.03=5.7-0.03=5.47

8.3-2.63+2.73*1.5=8.3-(2.73-0.1)+2.73*1.5=8.3+0.1-2.73+2.73*1.5=8.4+2.73*(1.5-1)=8.4+2.73*0.5=8.4+1.365=9.765

=8.3-2.63+2.73*1+2.73*0.5 =8.3+0.1+1.365 =9.565

5.67

=8.3+1.1+2.73*0.5=9.4+1+0.35+0.015=10.75+0.015=10.765

=8.3-4.095=4.205

把8.3提出来,就成了 8.3*(1.24+3.76)=8.3*5=41.5 懂了没?不懂的话我再给你讲讲.

=8.3*(5.36-2.36)=8.3*3=24.9

4.7*8.3+4.5=4.5*8.3+0.2*8.3+4.5=4.5*(8.3+1)+1.66=4.5*9.3+1.66=4.5*9+4.5*0.3+1.66=40.5+1.35+1.66=43.51

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