Count forwards and backwards in multiples of 2, 20, 5, 50 and 25 | Maths

Starter quiz

What number comes next: 30, 35, 40, ______?
- '45' ✓
What number comes next: 20, 22, 24, ______?
- '26' ✓
What number is missing from the number track?
- '85' ✓
What number is missing from the number track?
- '50' ✓
Match up the equations.
- 100 + 50 =
  
  ⇔
  
  150 ✓
- 300 − 50 =
  
  ⇔
  
  250 ✓
- 250 + 50 =
  
  ⇔
  
  300 ✓
- 250 − 50 =
  
  ⇔
  
  200 ✓
What number is subtracted from 420 to equal 380? Use the number line representation to help you.
- '40' ✓

Which multiple of 20 comes next: 240, 260, 280, ______?
- '300' ✓
Which numbers are multiples of 25?
- 125 ✓
- 250 ✓
- 255
- 375 ✓
What number is missing from the number track?
- '400' ✓
What number is missing from the number track?
- '200' ✓
Sofia counts backwards in multiples of 25 from 325. What are the next three numbers she will say?
- 350, 375, 400
- 325, 300, 250
- 300, 275, 250 ✓
- 300, 250, 200
Andeep counts backwards in multiples of 20. What number has he missed from his count?
- '480' ✓

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If you can count in 2s, you can count in 20s. The 1s or 10s digit follows the pattern of 2, 4, 6, 8 and 0
If you can count in 5s, you can count in 50s. The 1s or 10s digit follows the pattern of 5 and 0
When you count up in 25s, the 10s and 1s digits are always 25, 50, 75 or 0

Pupils may make mistakes with counting, particularly when crossing a 100s boundary.

Encourage pupils to use the pattern to help them count accurately, using this to predict the next number in the count.

Multiple - A multiple is the result of multiplying a number by another whole number.
Pattern - A pattern is a repeated set of numbers, shapes or objects.