Maths Sudoku

A 9x9 Sudoku grid is filled in by first solving a maths expression placed in each cell rather than reading a plain number.
Year levels
Years 4–6
File type
PDF
Editable
Yes

Updated Aug 20, 2022

Subject
Algebra, Maths
Topic
Sudoku, Puzzle
Resource types
Games
Editable
Yes

From the author

About this resource

A sudoku with a mathematical twist! The starting clues are mathematical expressions; the remaining squares are blank. Students must solve the expression first before completing the puzzle. In the second activity, students will write their own expressions to make a puzzle using one of four supplied number-board templates!

In the classroom

Teaching tips & learning objectives

Learning objectives

  • Evaluate maths expressions involving GCF, fractions, exponents, and square roots to determine a digit 1-9.

  • Apply Sudoku logic to complete a 9x9 grid so each row, column, and 3x3 box contains every digit once.

  • Write original maths expressions, including fractions, exponents, and factorials, that evaluate to a specified digit.

Teaching tips

  • Start with Activity 1 (solving the pre-built expression Sudoku) before assigning Activity 2, which requires students to author their own expressions.

  • Adapt the 'Write Your Expressions' page directions to match whatever unit topics the class has recently covered, as the teacher notes suggest.

  • Have students swap their completed Activity 2 boards with a partner to solve each other's puzzles as a peer-check step.

Skills covered

  • Mixed maths-expression evaluation — students solve expressions involving GCF, fractions, exponents, and square roots to find each digit.

  • Sudoku logic — students apply row/column/box uniqueness rules to complete a 9x9 grid.

  • Original expression writing — students write their own maths expressions for a target digit, incorporating fractions, exponents, and factorials.

Good to know

Questions teachers ask about this resource

How does Activity 2 differ from simply solving a pre-made Sudoku puzzle?

In Activity 2, students choose a blank board layout and invent their own maths expression for every number on it, writing the expressions on a separate planning page before copying them into the correct squares, so the puzzle they create can then be solved by a classmate.

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