Web start with the largest number, '7', and count on three numbers, '8', '9', '10'. The counting on addition strategy is a great mental math strategy used to build. Start with the largest number,. 8 + 4 = 12.
8 + 4 = 12. The counting on addition strategy is a great mental math strategy used to build. 8 + 4 = 12. Start with the largest number,. Web start with the largest number, '7', and count on three numbers, '8', '9', '10'.
