AP Aussie Primary Academy

Year 1 · Maths · Number · Free Printable

Missing Numbers to 100

Help Year 1 students practise number patterns and complete missing numbers up to 100.

AC9M1N01MathsNumberAnswer Key Included

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year-1-missing-numbers-to-100 Preview
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Learning Intention

Students will identify and write missing numbers in sequences up to 100.

Australian Curriculum

AC9M1N01

Recognise, represent and order numbers to at least 120 using partitioning, place value and number lines.

Teacher Notes

Use a hundred chart. Start with sequential numbers, then introduce skip counting patterns.

Skills Practised

  • Number sequences to 100
  • Missing numbers
  • Pattern recognition
  • Counting skills

Finding Missing Numbers

Missing-number tasks build understanding of number order and patterns. Ask children to look at the numbers before and after the gap rather than guessing.

A Simple Strategy

  1. Read the numbers from left to right.
  2. Notice how much the numbers increase or decrease.
  3. Use the known numbers to work out the missing value.
  4. Count through the sequence to check the answer.

Try starting from different numbers and counting forwards or backwards to strengthen number fluency.