Today we will be learning:

• to describe and continue number sequences

• to recognise two-digit multiples of 2,5 and 10 and three-digit multiples of 100.

Mental Activity

We are going to practise adding 9, 10 and 11 to two-digit numbers and

three-digit numbers.

Can you complete each addition before it disappears?

146 + 10

66 + 9

157 + 9

98 + 10

51 + 1172 + 10 121 + 11

83 + 9

135 + 11

Main Activity

Today we are going to work with multiples.

Look carefully at these numbers.

42 35 50 28 15

70 32 65 90 44

They are all multiples of 2, 5 and/or 10.Can you say which is which?

How did you know?

Which digit did you use to help you?

What do you know about all multiples of 2?

Here are some of the multiples of 3.

3 6 9 12 15

What can you say about them?

4 8 12 16 20

What can you say about these multiples of 4?

What can you say about these multiplesof 100?

100 200 300 400 500

This Venn diagram shows numbers from 1 to 9.

Odd numbers

Multiples of 3

4

1 57

9

36

8

2

The numbers are sorted into the sets.

Why are 3 and 9 in the middle?

Odd numbers

Multiples of 3

4

1 57

9

36

8

2

Because they are multiples of 3 and odd numbers.

Why are 4, 8 and 2 outside the ovals?

Odd numbers

Multiples of 3

4

1 57

9

36

8

2

Because they are neither odd numbers nor multiples of 3.

Group Work

Complete number sequences with missing numbers.

Colour the multiples of 2, 5 and 10 on a hundred square.

Use Venn diagrams to sort the multiples of 2, 5 and 10.