Teach your children 3rd grade math skills like fractions, multiplication tables and division. ... Use knowledge of addition to understand that 4 x 7 is the same as 4 x 5 + 4 x 2.

Simmons, 40, was never great at math. His son, who is in third grade, had just failed a test on fractions. Simmons wasn’t sure he remembered the difference between a numerator and a denominator.