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 2

Name:Date:Score: / 12

Write the missing number.

33, ___, 35, 36, 37, 38
75, 76, ___, 78, 79, 80
87, ___, 89, 90, 91, 92
70, ___, 72, 73, 74, 75
85, 86, 87, 88, ___, 90
48, 49, 50, 51, ___, 53
58, 59, ___, 61, 62, 63
56, 57, ___, 59, 60, 61
68, 69, ___, 71, 72, 73
40, 41, ___, 43, 44, 45
36, 37, 38, 39, ___, 41
28, 29, ___, 31, 32, 33

with answer key

Missing numbers (skip counting)

Class 1–2 · Worksheet 2 · set 2

Name:Date:Score: / 12

Write the missing number.

5, 10, ___, 20, 25, 30
50, ___, 70, 80, 90, 100
100, ___, 120, 130, 140, 150
30, 40, 50, 60, ___, 80
45, 50, 55, 60, ___, 70
14, 16, ___, 20, 22, 24
70, 80, ___, 100, 110, 120
35, ___, 45, 50, 55, 60
90, 100, ___, 120, 130, 140
20, ___, 40, 50, 60, 70
10, 20, ___, 40, 50, 60
12, 14, 16, ___, 20, 22

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.