Multiply by 5 using the grouping of objects, counting by fives, and arrays. Explore the Multiply by 5 facts using the grouping of objects, counting by fives, and arrays. Compete against characters to ...

Numberphile revived an ancient multiplication trick—halves and doubles—also called Egyptian or Russian math, where you ...

Practice multiplying by 9 using your fingers and several math games. Explore the Multiply by 9 facts by recognizing there is only one new fact: 9 x 9. Compete against characters to see who finds the ...

Troup fifth-grader Godslove Ampah used to struggle most with math, back when she was still living in her home country of Ghana. Now, three years later, that’s completely changed — and Godslove finds ...