docs: update README.md

pansyjs · Jun 20, 2022 · c040d2b · c040d2b
1 parent a8b71a4
commit c040d2b
Showing 1 changed file with 13 additions and 3 deletions.
diff --git a/packages/number-precision/README.md b/packages/number-precision/README.md
@@ -15,10 +15,20 @@ yarn add @pansy/number-precision
 
 ## 🔨 使用
 
-```
+```ts
 import NumberPrecision from '@pansy/number-precision';
 
-const np = NumberPrecision();
+const np = new NumberPrecision();
+
+// 加法
+np.plus(0.1, 0.2); // 0.3
+
+// 乘法
+np.times(0.1, 10); // 1
+
+// 减法
+np.minus(0.2, 0.1); // 0.1
 
-np.add(0.1 + 0.2); // 0.3
+// 除法
+np.divide(0.2, 0.1); // 2
 ```