**Elementary School Number Sense Lesson 19: Multiplying by 75**

Multiplying by 75 is one of the more tedious multiplication concepts in number sense. This appeared just

**5 times**this year on elementary tests, with the median placement at

**question # 25**.

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**Number Dojo Level: 75**

There are several ways to multiply by 75, including:

- Multiply the number by 3, then by 5, and again by 5
- Multiply the number by 15 and then by 5

Personally, I use

**Mult25**and then triple the result.

**Example 1: 75 x 16 = ___**

- Use Mult25. 16 ÷ 4 =
**4**; 4 x 100 =**400** - Triple the result. 400 x 3 =
**1200**

**Example 2: 28 x 75 = ___**

- Use Mult25. 28 ÷ 4 =
**7**; 7 x 100 =**700** - Triple the result:
**2100**

**Example 3: 75 x 52 = ___**

- Use Mult25. 52 ÷ 4 =
**13**; 13 x 100 =**1300** - Triple the result:
**3900**

**Example 4: 75 x 92 = ___**

- Use Mult25. 92 ÷ 4 =
**23**; 23 x 100 =**2300** - Triple the result:
**6900**

**Example 5: 480 x 75 = ___**

- Use Mult25. 480 ÷ 4 =
**120**; 120 x 100 =**12000** - Triple the result:
**36000**

**Here's a free worksheet to help you practice Mult75:**

mult75.pdf |

**Up Next for Elementary School: DivWhole3Num**