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 11

Name:Date:Score: / 12

Write the missing number.

78, 79, 80, 81, ___, 83
48, 49, ___, 51, 52, 53
13, 14, ___, 16, 17, 18
51, 52, 53, 54, ___, 56
47, ___, 49, 50, 51, 52
15, ___, 17, 18, 19, 20
83, 84, 85, 86, ___, 88
57, 58, 59, 60, ___, 62
91, 92, 93, ___, 95, 96
80, 81, 82, 83, ___, 85
58, ___, 60, 61, 62, 63
19, 20, 21, 22, ___, 24

with answer key

Missing numbers (skip counting)

Class 1–2 · Worksheet 2 · set 11

Name:Date:Score: / 12

Write the missing number.

90, 100, 110, ___, 130, 140
10, 15, 20, 25, ___, 35
45, 50, ___, 60, 65, 70
10, ___, 30, 40, 50, 60
6, ___, 10, 12, 14, 16
18, 20, 22, 24, ___, 28
100, 110, ___, 130, 140, 150
35, 40, 45, 50, ___, 60
90, 100, 110, 120, ___, 140
10, ___, 20, 25, 30, 35
20, 25, ___, 35, 40, 45
50, 60, 70, 80, ___, 100

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.