If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

To log in and use all the features of Khan Academy, please enable JavaScript in your browser.

Common Core MathK - 8
High School

Grade 3: Operations and Algebraic Thinking
1120 questions13 skills

3.OA.A.1

20 questions1 skill

Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each.

Meaning of multiplication 2

3.OA.A.2

3 questions1 skill

Interpret whole-number quotients of whole numbers, e.g., interpret 56 ÷ 8 as the number of objects in each share when 56 objects are partitioned equally into 8 shares, or as a number of shares when 56 objects are partitioned into equal shares of 8 objects each.

Meaning of division

3.OA.A.3

200 questions1 skill

Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

Multiplication and division word problems

3.OA.A.4

620 questions4 skills

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

1-digit division

Multiplying 1-digit numbers

Solving basic multiplication and division equations

3.OA.B.5

37 questions2 skills

Apply properties of operations as strategies to multiply and divide.

Properties of multiplication 1

Properties of multiplication 2

3.OA.B.6

20 questions1 skill

Understand division as an unknown-factor problem.

Relate division to multiplication

3.OA.C.7

200 questions1 skill

Fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division (e.g., knowing that 8 × 5 = 40, one knows 40 ÷ 5 = 8) or properties of operations. By the end of Grade 3, know from memory all products of two one-digit numbers.

3.OA.D.8

20 questions1 skill

Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

Two-step word problems with addition, subtraction, multiplication, and division

3.OA.D.9

Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations.