Multiplication is essentially repeated addition, or growing numbers by doubling, tripling, quadrupling, and so on. This unit presents mental models and strategies that help students learn and review the concept of multiplication. Students explore multiplication using arrays, partial products, doubling methods and the standard algorithm to solve numerical and word problems. Students will multiply whole numbers and simple decimals by base ten exponents (i.e. .3 x 103).
Fifth graders are ready to learn how to multiply multi-digit numbers once they've mastered simpler problems and are looking for a challenge. Give students the practice they need to succeed with these exercises.