standard_description: Explain why addition and subtraction strategies work, using place value and the properties of operations. (Explanations may be supported by drawings or objects.)
problem_activity: Stage 3: Multi-digit Numbers
Required Preparation
Materials to Gather
Number cards 0–10
Materials to Copy
Blackline Masters
Greatest of Them All Stage 3 Recording Sheet

Narrative
Students make six-digit numbers.
Variation:
Students try to make the number with the least value.


aligns: no