数学题:一枚2分的硬币重1克，20元的2分硬币重多少千克？1.5千克重的2分硬币有多少枚？

数学题解答：

20元＝2000分

2000÷2=1000（个）

1×1000=1000（克）=1千克

答：20元的2分硬币重1千克。

1000×1.5=1500（枚）

答：1.5千克重的2分硬币有1500枚。

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