freeCodeCamp/guide/chinese/mathematics/multiplying-fractions/index.md

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---
title: Multiplying Fractions
localeTitle: 乘以分数
---
## 乘以分数
分数通常用于表示数字,该数字是两个数字的比率。
考虑分数五分之四 这里4被称为分子和5被称为分母。
以下是将两个分数相乘的步骤
1. 将分数的分子和分母相乘
2. 如果可能,简化结果分数
#### 例1
4/5×3/5 \=4×3/5×5=25分之12
#### 例2
4/5×3/2 \=4×3/5×2= 12/10 = 6/5简体
#### 例3
将分数乘以整数。
请注意通过将其分母视为1整数也可视为分数。
4/5×2 \=4×2/5×1= 8/5