Unpacked Content
Knowledge
Students know:
- place value models for adding and subtracting numbers less than 100.
- Strategies for adding and subtracting multiples of 10.
Skills
Students are able to:
- use models and strategies to find and record solutions to problems where a multiple of 10 is subtracted.
- Explain their strategies.
Understanding
Students understand that:
- patterns in the place value system can be used to mentally compute sums and differences.
Vocabulary
- Multiple of 10
