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① ×5= ② = ③ ×0.36= ④ ×60%=
⑤ ÷8= ⑥12 = ⑦ = ⑧ =
68÷10%= 80%×20%= 1+8%= 7÷7-2.1÷7=
3.2- = 5÷ = ÷60%=
÷= 3.6:= 3.14×42= ×90%÷×90%=
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