Grade 3 · Math · Multiplication

3rd Grade Missing Factors worksheets

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Missing Factors

Grade 3 Math Worksheet - Building Confidence

NameDate

Write the answer on the line, or circle the answer.

4 × = 16
2.
Which number makes 12 = 2 × ____ true?
- 6
- 2
- 7
An array has 20 leaves in 4 equal columns. How many rows does the array have?
24 pencils are put into groups of 4. How many groups are there?
5.
Which division fact is true and finds the missing factor in 5 × ____ = 25?
- 30 ÷ 5 = 5
- 25 ÷ 5 = 4
- 25 ÷ 5 = 5
× 2 = 4
7.
Which number makes 9 ÷ ____ = 3 true?
- 4
- 5
- 3
An array has 12 bells in 3 equal columns. How many rows does the array have?
18 leaves are put into groups of 3. How many groups are there?
10.
Which division fact is true and finds the missing factor in 3 × ____ = 15?
- 15 ÷ 3 = 6
- 15 ÷ 3 = 5
- 12 ÷ 3 = 5

3rd Grade Missing Factors worksheet 1 – printable PDF — Download PDF: 1 2 3 4 5 6

About this worksheet

Missing-factor problems ask students to reverse multiplication: if one factor and the product are known, what factor is missing? Third graders often try random facts rather than using the relationship between multiplication and division. This worksheet makes the relationship explicit. Students solve equations with the blank in the first place, the second place, or on the left of the equals sign, find how many rows an array has, choose the division fact that finds the missing number, and solve equal-group word problems.

Support versions use the 2s through 5s. Standard versions use every one-digit fact. Challenge versions use the hardest facts, the 6s through 9s. Every question on a sheet uses a different fact. Encourage your child to read the equation as a question: how many groups of the known factor make the product? That language keeps the answer tied to multiplication rather than guessing.

What your child will learn

Find an unknown factor
Use multiplication and division as related operations
Read arrays with a missing side
Solve equal-group unknowns

Common Core standard: 3.OA.A.4

Worked example

If 6 × blank = 42, the missing factor is 7 because 6 × 7 = 42.

Common mistake

Choosing a number that is near the product instead of a factor that makes the product.

Helpful hint

Ask what number times the known factor makes the product.

Next skill: Division Facts Earlier: Multiplication Facts: 3s, 4s, and 6s

Questions parents ask

What is the most common mistake with missing factors?

Choosing a number that is near the product instead of a factor that makes the product.

How can I help my child with missing factors?

Ask what number times the known factor makes the product.

Are these 3rd grade math worksheets free to print?

Yes. All 6 printable versions on this page are free to download and print, with no account needed.

More 3rd grade multiplication

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