B39 — Multiplication: Working with Multiples of 10
Problem Strings for Fluency and Beyond · Multiplication: Working with Multiples of 10
Teacher notes
This string is like B35. Continue to represent children’s strategies on an open array.
See B35 — Multiplication: Working with Multiples of 10 for the full "Behind the Numbers" explanation — this string uses the same crafting logic.
The string
- 4x8
- 10 x 8
- 20 x 8
- 30 x 3
- 40 x 8
- 4 x 8 x 10
