PowerPoint

: 32*19

8 . 30 . ?243

: 512+4991200 -10001012

!

31

5000:1=499950002121

5000:1=499950002121

0.7*10=579

0.25+1/40.2501/21

__+0.75=21.151.250.9

0.3+0.51.138/100.7

0.4+6/10+1/2=1.113/20.5

5000:149995000100

999999986698

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