3 sentences

1. 金额总计为壹仟圆整。

   jīn'é zǒng​jì wéi yī qiān yuán zhěng.

   The total amount is exactly one thousand yuan.

   Source: Dong Chinese Dictionary

2. 支票上的金额是大写贰仟圆。

   zhī​piào shàng de jīn'é shì dà​xiě èr qiān yuán.

   The amount on the check is two thousand yuan in formal capital letters.

   Source: Dong Chinese Dictionary

3. 支票上的金额必须大写为叁仟元整。

   zhī​piào shàng de jīn'é bì​xū dà​xiě wéi sān qiān yuán zhěng.

   The amount on the check must be written in formal numerals as 'Three Thousand Yuan Exactly'.

   Source: Dong Chinese Dictionary