22
Center for the Mathematics Education of Latinos/as
Teachers’ Strategies
Common algebraic problem solving strategy
6+7+8+9+10 = 6+8+8+8+10 = 8+8+8+8+8 = 5(8)
6+7+8+9 = 7+7+8+8 = 4(7.5)
Common visual strategy
(4 consecutive)
My favorite strategy
x + (x + 1) + (x + 2) + (x + 3)  = 4x + 6 = 4(x + 1) + 2
= 2 more than a multiple of 4
Sum / 4
2nd integer
1st integer
3rd integer
4th integer
9
8
7
6