4.4+2.6= 7.3-0.9= 6.7+5.7= 6.02-5.8=
0.2×0.8= 45.7÷10= 0.25×0.4= 3.9×0.2=
25.4-4= 60.8-45.8= 0.33×0.7= 65.4÷100=
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