Problems Like 73 – 19
These exercises and activities are for students to use independently of the teacher to practice number properties.
Number Framework domain and stage:
Addition and subtraction, AA to AM
Number, Levels ¾
Numeracy Project book reference:
These activities can be used to follow the teaching episode in Book 5 called Problems Like 73 – 19 = ?. They are suitable for those students who are able to apply number properties successfully.
Students should know basic facts to 100.
During these activities, students will meet:
- 73 -19 = ? ? 73 – 20 + 1
- 56 – 29 = 56 - ? + 4
- The generalisation for the above examples.