01 / QUICK RECAP
Connect the ideas.
- Use doubles, make-ten facts and inverse relationships.
- Choose useful partitions rather than counting every object.
- A missing number may be a part or the starting whole.
- Estimate the size, then check exactly with another method.
Curriculum reference & lesson scope
Australian Curriculum v9 and SA Curriculum Mathematics
Facts within 20; one-/two-digit calculations; partitioning; related facts; missing numbers; checking.
Official curriculum source ↗