Missing numbers worksheets — fill in the gaps

Free missing numbers worksheets for UKG, Class 1 and 2: counting by ones and skip counting by 2s, 5s and 10s — new numbers every set, with answers.

💡 Learn it first

Look at the numbers before and after the gap — what is the jump between them?
If the numbers go up by 1, add 1. If they go up by 5, add 5.
Check: the number you write must fit both sides of the gap.

❓ The worksheets

🔄 New set of questions

Missing numbers (count by 1s) (UKG–Class 1)Missing numbers (skip counting) (Class 1–2)

Missing numbers (count by 1s)

UKG–Class 1 · Worksheet 1 · set 82

Name:Date:Score: / 12

Write the missing number.

80, 81, 82, ___, 84, 85
39, 40, ___, 42, 43, 44
78, 79, ___, 81, 82, 83
36, ___, 38, 39, 40, 41
41, ___, 43, 44, 45, 46
82, 83, 84, 85, ___, 87
68, 69, ___, 71, 72, 73
43, ___, 45, 46, 47, 48
36, 37, ___, 39, 40, 41
3, 4, 5, ___, 7, 8
71, 72, 73, ___, 75, 76
21, ___, 23, 24, 25, 26

with answer key

Missing numbers (skip counting)

Class 1–2 · Worksheet 2 · set 82

Name:Date:Score: / 12

Write the missing number.

30, 40, ___, 60, 70, 80
10, ___, 20, 25, 30, 35
6, 8, ___, 12, 14, 16
100, 110, 120, ___, 140, 150
30, 40, 50, ___, 70, 80
60, 70, 80, 90, ___, 110
50, 60, 70, 80, ___, 100
70, 80, 90, 100, ___, 120
70, 80, 90, ___, 110, 120
90, 100, ___, 120, 130, 140
6, 8, 10, 12, ___, 16
20, 22, 24, 26, ___, 30

with answer key

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Questions

How do I help my child find missing numbers?

Say the sequence aloud together and pause at the gap — the child usually hears what comes next.

Are these worksheets free?

Yes — print them or save as PDF free. Every worksheet has an answer key.

How do I get different questions?

Press “🔄 New set” — the questions change (maths numbers are new every time; English sentences are shuffled).

How do I print only one worksheet?

Press “🖨️ Print” on that worksheet. Tick “with answer key” if you want the answers on a second page.

Can my child do this worksheet online, like a quiz?

Yes — press “▶️ Practise online” on any worksheet. The questions come one at a time with instant marking, a score at the end and a review of mistakes. No sign-in is needed.