B76 โ Mystery Numbers: Part/Whole and Equations
Problem Strings for Fluency and Beyond ยท Mystery Numbers: Part/Whole and Equations
Teacher notes
This string is like B75.
See B75 โ Mystery Numbers: Part/Whole and Equations for the full "Behind the Numbers" explanation โ this string uses the same crafting logic.
The string
- ? x 6 = 66
- 66 รท 6 = 33 รท ?
- 60 รท 6 = ? รท 3
- 54 รท 6 = ? รท 3
- 72 รท ? = 36 รท 6
- 84 รท 12 = ? รท 6
- ? รท 12 = 48 รท 6 = 24 รท 3