**High School Number Sense Lesson 101: Multiplying Percents--3rd variety**

This concept is an extension of

**Mult%**and

**Mult%2**. It appeared

**10 times**this year, with a median placement at

**question # 43**.

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Sometimes you are asked to perform multiple operations with one or more percent calculations. You will need to consider the proper order of operations (covered in a previous lesson as

**OrderOfOper**) for these. Here are some examples:

**Example 1: 80% of 70 minus 60 is ___**

- Think: (80% x 70) - 60 = ___
- Ignore the % sign and remove 2 zeros to get: (8 x 7) - 60.
- 8 x 7 = 56. 56 - 60 =
**-4**.

**Example 2: 45 less 30% of 40 is ___**

- Think: 45 - (30% x 40) = ___
- Ignore the % sign and remove 2 zeros to get: 45 - (3 x 4).
- 3 x 4 = 12. 45 - 12 =
**33**.

**Example 3: 40% of 50 plus 60% of 70 = ___**

- Think: (40% x 50) + (60% x 70) = ___
- Ignore the % signs and remove 2 zeros from each pair to get: (4 x 5) + (6 x 7).
- 4 x 5 = 20. 6 x 7 = 42. 20 + 42 =
**62**.

**Example 4: 10% of 30% of 40 is ___ (decimal)**

- Think: 10% x 30% x 40 = ___
- Ignore the % signs and remove 4 zeros to get: 1 x 3 x .4
- 3 x .4 =
**1.2**

**Example 5: 55% of 35 – 35% of 55 = ___**

- Ignoring the % signs, you’ll notice that this is just (55 x 35) – (35 x 55).
- The answer is
**0**

**Here's a free worksheet to help you practice Mult%3:**

mult_3.pdf |

**Up Next for High School: PolygonTriang**