B5 — Multiplication within 100: Automatizing Basic Facts using the Open Number Line
Problem Strings for Fluency and Beyond · Multiplication within 100: Automatizing Basic Facts using the Open Number Line
Teacher notes
This string is like B1. Partial products, doubling, halving, and doubling and halving with equivalence (5x8 = 10x4) will all emerge.
See B1 — Multiplication within 100: Automatizing Basic Facts using the Open Number Line for the full "Behind the Numbers" explanation — this string uses the same crafting logic.
The string
- 3x8
- 4x8
- 8x4
- 7x8
- 8x8
- 10 x 8
- 5x8
- 10 x 4
