AP Aussie Primary Academy

Year 1 · Maths · Number · Free Printable

Missing Numbers to 50

Help Year 1 students complete number sequences and identify missing numbers to strengthen counting and place value skills.

AC9M1N01MathsNumberAnswer Key Included

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Learning Intention

Students will identify and write missing numbers in sequences up to 50.

Australian Curriculum

AC9M1N01

Recognise, represent and order numbers using partitioning, place value and number lines.

Teacher Notes

Start with consecutive numbers, then try counting by 2s. Use a number line or chart for support.

Skills Practised

  • Number sequences
  • Missing numbers
  • Counting to 50
  • Pattern recognition

Finding Missing Numbers to 50

A missing-number sequence can be solved by looking for the counting pattern. The numbers may increase or decrease by the same amount.

Find the Pattern

  1. Read the numbers on both sides of the gap.
  2. Work out how much the sequence changes.
  3. Apply the same step to the missing place.
  4. Read the complete sequence to check it.

Use a number line when you need a visual check, especially when counting across a group of ten.