Operations – Mental Math (Gr1)
Skills:
- Use “making ten” strategy to add whole numbers up to 20 and explain the strategy used (3:58)
- Use “doubles” strategy to add whole numbers up to 20 and explain the strategy used (5:31)
- Use “count on” strategy to add whole numbers up to 20 and explain the strategy used (3:58)
- Use “count back” strategy to subtract whole numbers that add up to 20 and explain the strategy used (2:51)
- Use estimation, to add whole numbers that add up to 20 and explain the strategies used (3:36)