3.OA.B.5: Properties of multiplication: turn it round, regroup it, split it (distributive)

Apply properties of operations to multiply.Common Core State Standards for Mathematics, as adopted in the Massachusetts Curriculum Framework for Mathematics (2017), Grade 3.

Play the game: Turn the BlockStep 59 of the ColorMyMath curriculum · free, no sign-up →

How ColorMyMath teaches it

Addition is a length — dots laid end to end on the number line. Taking away comes down the same line. Every fact is shown as a picture before it is ever asked for from memory.

Every page is free and open — nothing to install, no account, and it works on a phone or a classroom board. Every number has its own color: 1 red, 2 orange, 3 yellow, 4 green, 5 blue, 6 purple, 7 brown, 8 pink, 9 cyan, and a number is that many colored dots.

Where it sits in the curriculum

• Step 59Multiplication: Calculating Areas I
• Step 60Multiplication II / Division I: Calculating Areas II
• Step 76Two-digit by two-digit multiplication — the Multiplication Dance

More Grade 3 standards in Operations and Algebraic Thinking

• 3.OA.A.1Multiplication as equal groups (5 x 7 is 5 groups of 7)
• 3.OA.A.2Division as sharing out equally
• 3.OA.A.3Multiplication and division word problems within 100: equal groups and arrays
• 3.OA.A.4Find the unknown number in a multiplication or division equation (8 x ? = 48)
• 3.OA.B.6Division is an unknown-factor problem
• 3.OA.C.7Multiply and divide within 100 fluently; know all products of two one-digit numbers
• 3.OA.D.8Two-step word problems with all four operations
• 3.OA.D.9Find and explain patterns in the addition and times tables

ColorMyMath · getridoftheteacher.com · every number has its own color, and a number is that many colored dots. Matching a game to a standard is a judgement call; the official text is at doe.mass.edu.