Instructional video

Use an array to multiply a two-digit number by a one-digit number

teaches Common Core State Standards 4.NBT.B.5 http://corestandards.org/Math/Content/4/NBT/B/5

Use an array to multiply a two-digit number by a one-digit number

In this lesson, you will learn strategies for multiplying 2 digit by 1 digit numbers... by breaking apart their arrays into easily manageable multipliers.