Introduce missing numbers in addition number sentences with these slides, showing students how to use the relationship between addition and subtraction to find an unknown addend. Explore representing missing numbers as shapes to solve for multiple unknowns, then practise finding missing numbers step by step.
What's included:
Introductory slides explaining number sentences and how to find a missing number using subtraction
8 practice slides, including finding the missing number in a number sentence and solving mystery shapes with multiple unknown values