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Free · UKG–Class 2 · 2 worksheets · answer keys · practise online · set 36

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.

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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 36
Name:Date:Score:    / 12

Write the missing number.

  1. 18, 19, 20, 21, ___, 23
  2. 93, 94, ___, 96, 97, 98
  3. 78, 79, ___, 81, 82, 83
  4. 71, 72, 73, ___, 75, 76
  5. 28, ___, 30, 31, 32, 33
  6. 51, 52, 53, 54, ___, 56
  7. 17, 18, 19, ___, 21, 22
  8. 75, 76, ___, 78, 79, 80
  9. 38, 39, ___, 41, 42, 43
  10. 52, ___, 54, 55, 56, 57
  11. 42, 43, ___, 45, 46, 47
  12. 4, 5, 6, ___, 8, 9

Missing numbers (skip counting)

Class 1–2 · Worksheet 2 · set 36
Name:Date:Score:    / 12

Write the missing number.

  1. 10, 15, ___, 25, 30, 35
  2. 30, 40, 50, 60, ___, 80
  3. 45, 50, 55, ___, 65, 70
  4. 4, 6, 8, ___, 12, 14
  5. 45, 50, 55, 60, ___, 70
  6. 100, ___, 120, 130, 140, 150
  7. 20, 25, ___, 35, 40, 45
  8. 50, 60, 70, ___, 90, 100
  9. 15, ___, 25, 30, 35, 40
  10. 10, 20, 30, 40, ___, 60
  11. 12, 14, 16, 18, ___, 22
  12. 6, ___, 10, 12, 14, 16

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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.