Mathematics
Mathematical Thinking
Meta
9–10 yrs
Complex Multi-Step Problems
复杂多步骤问题
Description
Make sense of complex multi-step problems involving large numbers, fractions, decimals, and percentages by analysing what is known and unknown, planning multi-step strategies, and evaluating reasonableness through estimation and inverse operations
Mastery Evidence
- Break a three-step problem involving unit conversion and multiplication into sub-problems and solve systematically
- Estimate 4,832 × 7 as roughly 5,000 × 7 = 35,000 to check a calculated answer of 33,824
- Identify that a percentage answer over 100% doesn't make sense in context
Assessment Prompt
When your child faces a complex multi-step maths problem involving percentages, large numbers, or fractions, do they pause to identify what's known, estimate an answer, and then check their final result makes sense?
