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Common Core Math3rd GradeOperations & Algebraic Thinking

3.OA.1: Understand Multiplication as Equal Groups

Also written as 3.OA.A.1 and CCSS.MATH.CONTENT.3.OA.A.1 · Cluster: Represent and solve problems involving multiplication and division.

Make a 3.OA.1 WorksheetAll 25 3rd Grade Math Standards

The Official Wording

Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each. For example, describe a context in which a total number of objects can be expressed as 5 × 7.

Common Core State Standards, Grade 3, Operations & Algebraic Thinking · Read it at the source · Checked October 14, 2026

What 3.OA.1 Means in Plain English

Third graders learn what the multiplication sign means before they memorize facts. 5 × 7 is five groups with seven in each: five tables with seven chairs, or five bags with seven apples. They draw it, say it as groups, and tell a story that matches.

At first, read 5 × 7 as 5 groups of 7. Knowing that 7 groups of 5 gives the same total comes with 3.OA.5. Equal groups carry into division as sharing (3.OA.2) and, in 4th grade, into comparisons like 35 is 5 times as many as 7 (4.OA.1).

3.OA.1 I Can Statements

  • I can explain what 5 × 7 means using equal groups.
  • I can draw equal groups to match a multiplication equation.
  • I can tell a story that a product like 5 × 7 describes.

3.OA.1 Worked Example

Five groups of seven, drawn, written and told as a story, which is the whole standard in one picture.

5 groups of 7
Five rows, seven dots in each row. Count by sevens to find the total: 7, 14, 21, 28, 35.
5 × 7 = 35

Five tables in the art room, seven stools at each table: 5 × 7 = 35 stools altogether. The 5 tells how many groups, the 7 tells how many in each group, and 35 is the total.

Common Mistakes with 3.OA.1

Swapping groups and group size

For 5 × 7, a drawing of 7 circles with 5 dots in each

Try this: Point to each factor and ask “how many groups?” then “how many in each?” before anyone draws a single circle.

Adding the factors

5 × 7 = 12

Try this: Have the student draw the five groups and count the dots. Twelve dots cannot fill five groups of seven.

A story that is really addition

“I had 5 apples and got 7 more.” offered as a story for 5 × 7

Try this: Ask whether every group has the same number. If the groups are not equal, it is an addition story, not multiplication.

Where 3.OA.1 Fits

Comes Before2.OA.4Add up the rows of an array, like 3 rows of 4 is 4 + 4 + 4.2.NBT.2Skip-count by 5s, 10s and 100s.
Alongside3.OA.2Read a quotient as sharing into equal groups or finding how many groups.3.OA.3Solve multiplication and division word problems within 100.
Comes Next3.OA.5Use the commutative, associative and distributive properties to multiply.4.OA.1Read a multiplication equation as a comparison: 35 is 5 times as many as 7.

Practice 3.OA.1

Multiplication Worksheet GeneratorFree ToolOpens with one times table at a time and an answer key. Have students draw the groups under each fact before they write the product.Facts to 10One table at a timeAnswer key
Make a Worksheet
Word Problem GeneratorFree ToolEqual-groups stories with one-digit factors, for the “describe a context” half of the standard.MultiplicationEqual groupsWithin 100
Make Word Problems

Quick Check

  1. What does 4 × 6 mean? Draw or describe it.
  2. Write the multiplication equation for 3 groups of 8.
  3. There are 6 shelves in the library corner. Each shelf holds 9 books. How many books is that?

3.OA.1: Other Names

3.OA.13.OA.A.1CCSS.MATH.CONTENT.3.OA.A.1

Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. Official wording from the Common Core State Standards PDFs at corestandards.org, last checked October 14, 2026. The explanation, I can statements, example, mistakes and practice on this page are EMStudio’s own, written beside the official wording. They are not part of the standard.