Mathematics
Addition & Subtraction
Procedural
8–9 yrs
Two-step addition and subtraction problems
两步加减法问题
Description
Solve addition and subtraction two-step problems in contexts, deciding which operations and methods to use and why
Mastery Evidence
- Identify the two steps needed to solve a contextual problem
- Choose between mental and written methods for each step based on the numbers
- Explain why the chosen operations and methods are appropriate
Assessment Prompt
If your child reads a word problem with two steps — like working out change from a shopping trip with two items — can they plan which calculations to do and in what order?
