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.