0.40元和0.400元价值相等，它们的计数单位不相等． ．
在括号里填上合适的数． × =80 ÷ =11．
根据乘法算式写出除法算式．
△×6=1.8△= ．
16÷ =× = 49÷ =÷ =× = 2.4× =3．
被除数÷除数=商 ÷ =除数； × =被除数．
× =
÷ =
× =
2.4× =3．
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