### Key Concepts

- Multiplication facts
- Division facts

It is a set of four related multiplication and division facts that use the same three numbers.

**For example**: The fact family for 2, 6 and 12 is a set of four multiplication and division facts.

Two are multiplication facts, whereas the other two are division facts.

**Multiplication facts:** 2 x 6 = 12; 6 x 2 =12

**Division facts**: 12 ÷ 2 = 6; 12 ÷ 6 =2

## 4.7.1 Multiplication facts

**Example1:**

Lenin arranged 25 pomegranates into 5 rows. How many pomegranates are there in each row?

**Solution: **

What times 5 equals 25?

? x 5 =25

**Example2:**

32 books are arranged in rows with 8 books in each. How many rows are there?

**Solution:**

What times 8 equals 32?

? x 8 =32

## 4.7.2 Division facts

**Example1:**

Mercy has 36 leaf stickers to put into a photo album. If there are 6 stickers on a page, how many sticker pages will she use?

**Solution:**

Find out how many groups of 6 are in 36?

6 leaves in each page.

36 ÷ 6 = 6

There are 6 equal groups 6 in 36.

She uses 6 sticker pages.

**Example2:**

Martin has 8 gardens in his backyard. He bought 48 plants to share equally among each garden. How many plants are there in each garden?

**Solution:**

Find out how many groups of 8 are in 48

48 ÷ 8 = 6

There are 6 equal groups 8 in 48.

6 plants are there in each garden.

**Example 3:**

Grade 4 students are doing a math activity. The class has 20 students. There are 4 students in each group. How many groups are there in the class?

**Solution:**

Find out how many groups of 4 are in 20

4 members in one group.

20 ÷ 4 = 5

There are 5 equal groups 4 in 20.

5 groups are there in the class.

## Exercise:

- Use multiplication or a division fact to complete the questions.

a. ______ x 5 = 20

20÷_____ = 5

b. ______ x 6 = 48

48 ÷ _____ =6 - Find the product.

a. _________ = 6 x 6

b. _________ = 7 x 8 - Find the quotient.

a. 16 ÷ 4 = _____

b. 21 ÷ 3 = _____ - Find the quotient.

a.

b.

5. Multiply 9 times 7.

6. Multiply 8 times 5.

7. Use fact families to complete the equations.

42 ÷ 6 = ______

7 x _______ = 42

8. The junior ranger asked Christian to help him place 40 seedlings in packets. One packet contains 8 seeds, how many packets do they need?

9. Uvona want share stickers with seven friends. If she plans to give all of them an equal number of stickers, how many stickers will each receive if she has 49 stickers?

10. Hilo has 16 baseball cards to put into a photo album. If there are 2 cards on a page, how many pages will he use?

### Concept map:

### What have we learned:

- Understand multiplication and division facts.
- Understand how to solve problem using multiplication facts.
- Understand how to solve problem using division facts.
- Understand how to find the quotient.

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