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0,12-0,04/2=0,12-0,02=0,1
0,6+0,4×14=0,6+5,6=6,2
0,2^2-0,1^2=0,04-0,01=0,03
6-1 1/2×2/3=6- 3/2×2/3=6-1=5
7,5+2:5=7,5+0,4=7,9
6-(1/2)^2×2=6-1/4×2=6-1/2=5,5
(1,3+2,7)×1 1/4-1,2= 4×5/4-1,2=5-1,2=3,8
4/5×1/2+2/9×9/10=2/5+1/5=3/5
3 3/4×4-10×2/5= 15/4×4-10= 15-10=5