无
*注意事项:
×2.1= 12÷ = × = ×15= 1÷4× =
0.15× = 1÷ = 0÷ = 24× = ÷ × ÷ =
①15:
② :
③3.2元: 角
④18kg:500g
⑤28分:0.6时
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