Topic 4

North Carolina Standard Course of Study Third Grade Mathematics

Operations and Algebraic Thinking

NC.3.OA.A Represent and solve problems involving multiplication and division.

NC.3.OA.1 For products of whole numbers with two factors up to and including 10:

• Interpret the factors as representing the number of equal groups and the number of objects in each group.

• Illustrate and explain strategies including arrays, repeated addition, decomposing a factor, and applying the commutative and associative properties.

NC.3.OA.2 For whole-number quotients of whole numbers with a one-digit divisor and a one-digit quotient:

• Interpret the divisor and quotient in a division equation as representing the number of equal groups and the number of objects in each group.

• Illustrate and explain strategies including arrays, repeated addition or subtraction, and decomposing a factor.

NC.3.OA.3 Represent, interpret, and solve one-step problems involving multiplication and division.

• Solve multiplication word problems with factors up to and including 10. Represent the problem using arrays, pictures, and/or equations with a symbol for the unknown number to represent the problem.

• Solve division word problems with a divisor and quotient up to and including 10. Represent the problem using arrays, pictures, repeated subtraction and/or equations with a symbol for the unknown number to represent the problem.

NC.3.OA.B Understand properties of multiplication and the relationship between multiplication and division.

NC.3.OA.6 Solve an unknown-factor problem, by using division strategies and/or changing it to a multiplication problem.

NC.3.OA.C Multiply and divide within 100.

NC.3.OA.7 Demonstrate fluency with multiplication and division with factors, quotients and divisors up to and including 10.

• Know from memory all products with factors up to and including 10.

• Illustrate and explain using the relationship between multiplication and division.

• Determine the unknown whole number in a multiplication or division equation relating three whole numbers.

NC.3.OA.E Explore patterns of numbers.

NC.3.OA.9 Interpret patterns of multiplication on a hundreds board and/or multiplication table.

Please try "Thinking Blocks" (Bar Diagrams)

Students can view and practice how to use bar diagrams to solve word problems with multiplication from the links below. Please scroll down to find the video(s) you need.