Mathematics·Multiplication & Division·procedural
Ratio (age 10+)
Perform mental calculations including with mixed operations and large numbers, using strategies such as partitioning, compensation, and derived facts
Suggested ages 10–11
Learning journey
Your child is advancing to sophisticated multiplication and division — using formal written methods for complex calculations, working with decimals, and applying the order of operations to solve multi-step problems.
Evidence of understanding
- Mentally compute 45 × 8 by partitioning into 40 × 8 + 5 × 8
- Use known facts to derive 6.5 × 4 mentally
- Solve a multi-operation mental calculation such as 250 × 3 + 500 and explain the strategy used
Assessment prompt
Can Ratio (age 10+) work out a mixed calculation like '(200 × 6) + 350 − 75' entirely in their head — keeping track of each step without writing anything down?
Standards alignment
No external standards are linked to this topic.