# 3 Act Math Tasks

## Organized by the Common Core States Standard (CCSS) Initiative

**Not Common Core? Go to Ontario Curriculum alignment**

# Grade 3

## 3.OA.5

**Overall Expectation Description:**

Apply properties of operations as strategies to multiply and divide.2 Examples: If 6 × 4 = 24 is known, then 4 × 6 = 24 is also known. (Commutative property of multiplication.) 3 × 5 × 2 can be found by 3 × 5 = 15, then 15 × 2 = 30, or by 5 × 2 = 10, then 3 × 10 = 30. (Associative property of multiplication.) Knowing that 8 × 5 = 40 and 8 × 2 = 16, one can find 8 × 7 as 8 × (5 + 2) = (8 × 5) + (8 × 2) = 40 + 16 = 56. (Distributive property.)

## Related 3 Act Math Tasks:

## Airplane Problem – Trip to Toronto

### How many seats are there?

**Shared By:**

Kyle Pearce

**Math Topic:**

Counting and Quantity (Subitizing, Unitizing), Multiplication, Algebra

**Common Core State Standard Alignment:**