Curriculum placement
Grade 4. This describes the skill, not a learner estimate.
Adding and subtracting whole numbers
Use place-value algorithms to add and subtract multidigit numbers
Problem types
- Add multidigit numbers
- Subtract multidigit numbers
Builds on
- Adding and subtracting within 1,000
- Adding several two-digit numbers · Earlier idea
Adding several numbers by place value is the same regrouping used to add larger multidigit numbers.
Leads to
- Money with decimals
- The four operations with decimals · Extend the idea
Decimals are added and subtracted with the same place-value alignment and regrouping used for whole numbers.
- Adding and subtracting signed numbers · Extend the idea
Adding and subtracting large numbers extends to adding and subtracting signed numbers, where the sign decides whether to add or subtract the sizes.
Related skills
- Operations on matrices · Related idea
Adding two matrices adds entries in the same position, the same column-by-column addition used for large numbers.
- Equal equations with the four operations · Shared foundations
Open the interactive map to explore lessons and skill connections.