Year 5

# Using multiples to divide

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## Lesson details

### Key learning points

- In this lesson, we will explore dividing numbers by partitioning into multiples and dividing the parts. We will start with calculations that involve dividing by a single digit making links to the multiplication calculations in the last lesson. We will then find multiples of 2-digit numbers and use these to divide by partitioning into multiples in order to divide each part.

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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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### 5 Questions

Q1.

Which of the following statements about a prime number is true?

A prime number multiplied by a prime number will give a product that is a prime number

All prime numbers are odd.

The largest prime number is 97

Q2.

Using distributive law, which of the following number statements is FALSE?

10 X 6 = 5 X 6 + 5 X 6

22 X 2 = 20 X 2 + 2 X 2

3 X 6 = 3 X 3 + 3 X 3

Q3.

Look at the bar model below which is similar to other bar models used during the lesson. Which number statement does the bar model correctly represent to help us calculate the total number of swimmers?

12 x 4 x 3

3 x 3 x 4

4 x 2 x 2

Q4.

Below is an area model. What is the product of this area model?

15

30

9

Q5.

During the lesson, we demonstrated how an area model could be arranged to show distributive law after one of the factors was partitioned. If the product for a calculation is 120, what are the two missing values?

1 and 9

6 and 6

9 and 0

### 5 Questions

Q1.

Using your knowledge of inverse, which of the following numbers is not a factor of 248?

2

4

8

Q2.

Use your knowledge of multiples to identify the missing factor from the area model below.

28

30

34

Q3.

If I know 6 x 15 is 90, I can generate other facts. But which of the following number sentences is not derived from this original fact?

5 x 15 = 75

60 x 15 = 900

90 ÷ 15 = 6

Q4.

45 is a factor of 360 because.....

45 x 6

45 x 9

Q5.

Today we used cuisenaire rods to help set out multiples. If we give the white rod the value of 9, which of the following statements is true?

The black rod is worth 54

The blue rod is worth 72

The yellow rod is worth 27