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42÷6×3= 27-13+16= 3×9+10= 4+0.2=
5×9-20= 83-7×9=
14+72÷8= 9-5.72=
①1.3-0.8= 630÷90= 6-0.37= 100+100×0=
②60×0= 2.73+0.27= 0.75+0.3= 5×2+3=
③4.3÷1000= 0.69+1.1= 300×18= 6+6×4=
9+9+9+9+6=×+=×-
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