Level 2 Sums 9 to 12 Adding and subtracting basic equations by sight is essential to a solid math foundation Meet the Math Facts 1 2 and 3 make learning to add and subtract fun and easy With adorable ...

Level 3: Sums 13 to 20 Adding and subtracting basic equations by sight is essential to a solid math foundation. Meet the Math Facts 1, 2, and 3 make learning to add and subtract fun and easy! With ...