B69 — Mystery Numbers: Part/Whole and Equations
Problem Strings for Fluency and Beyond · Mystery Numbers: Part/Whole and Equations
Teacher notes
This string is like B68.
Notice how this string is developed? The problems within the string have been chosen for students to continue to use the multiplication facts they know to solve these problems. The problems will generate a discussion about the relationship between multiplication and division. The final problems in the string require students to use multiplication facts not presented in the string to solve the problem. Allow opportunity to discuss which facts are used and why.
The string
- 10 x 5 = ?
- 50 ÷ ? = 10
- ? x 5 = 40
- 40 ÷ 8 = ?
- 80 ÷ ? = 10
- 12 x ? = 60
- ? x 5 = 65
