这个多少钱？
译文：How much is this?
估算一下你一共有多少钱，看是否已经足够了。
译文：Reckon up all your money and see if you have enough.
How much和How many的区别：
how many：用来修饰可数名词的复数,它的句式是:How many+复数名词+一般疑问句＋?
例句：
1、how much is this dress?
译文：这个连衣裙多少钱？
2、how much are these desks?
译文：这些桌子多少钱？
how much：用来修饰不可数名词,表示数量,也可单独使用。
例句：
1、How many apples do you have?
译文：你有多少苹果？
2、How many days are there in a year?
译文：一年有多少天？