口算.4×0.025= 0.16×0.5= 1.1-0.96= 8÷1.5= 0.72÷1.2= 0.7+6.77= 18÷3.6= 1.2×0.5= 5
口算.4×0.025=0.16×0.5=1.1-0.96=8÷1.5=0.72÷1.2=0.7+6.77=18÷3.6=1.2×0.5=5.4-2.5-1.5=2.87÷...
口算.4×0.025= 0.16×0.5= 1.1-0.96= 8÷1.5= 0.72÷1.2= 0.7+6.77= 18÷3.6= 1.2×0.5= 5.4-2.5-1.5= 2.87÷0.7=
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