B21 — Multiplication within 100: Automatizing Basic Facts Using the Ratio Table
Problem Strings for Fluency and Beyond · Multiplication within 100: Automatizing Basic Facts Using the Ratio Table
Teacher notes
This string is like B18.
See B18 — Multiplication within 100: Automatizing Basic Facts Using the Ratio Table for the full "Behind the Numbers" explanation — this string uses the same crafting logic.
The string
- 3x7
- 6x7
- 5x7
- 10 x 7
- 11 x 7
- 9x7
- 4x7
