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 6: Decimals
Required Preparation
Materials to Copy
Blackline Masters
Mystery Number Stage 6 Gameboard

Narrative
Students choose a mystery number (up to nine digits) from the gameboard. Students give clues using the given vocabulary.


aligns: no