BrightPath
Balance Two Subtraction Expressions
Name:
Date:
Today I am practising: reasoning about equality between subtraction expressions
1
Calculate 14 − 5 and 12 − 3. Are the results equal?
2
Complete 16 − 7 = 13 − ___. Show both results.
3
Is 18 − 8 = 17 − 6 true? Correct one side if needed.
4
Find two different subtractions with a result of 6 and starts no greater than 20.
5
A learner says 15 − 4 = 14 − 3 because both numbers decreased by one. Check and explain.
6
Write a true equality with a subtraction on each side. Ask an adult to verify it.
- Read the equal sign as 'has the same value as'.
- Have the learner evaluate each side before accepting an equality.
- Use small paired drawings if the changing-start relationship is hard to explain.