Back to all topics

Algebra & Expressions

Dividing Monomials

To divide monomials: divide the coefficients and subtract the exponents of matching variables.

Division is just multiplication in reverse — divide the numbers, subtract the exponents!

Watch & Learn

Watch a clear, friendly video explanation of Dividing Monomials:

Watch on YouTube →

Opens a YouTube search for the best tutorial videos on this topic.

Worked Examples

Follow along with these step-by-step examples. Take your time — there's no rush!

1Example 1

Problem

Divide: 12x⁵ ÷ 4x²

Step-by-Step Solution

1

Divide coefficients: 12 ÷ 4 = 3.

2

Subtract exponents: x⁵ ÷ x² = x^(5−2) = x³.

Answer

3x³

2Example 2

Problem

Divide: 20x⁴y³ ÷ 5x²y

Step-by-Step Solution

1

Divide coefficients: 20 ÷ 5 = 4.

2

Subtract x exponents: x⁴ ÷ x² = x².

3

Subtract y exponents: y³ ÷ y¹ = y².

Answer

4x²y²

3Example 3

Problem

Divide: −18a⁶ ÷ 3a²

Step-by-Step Solution

1

Divide coefficients: −18 ÷ 3 = −6.

2

Subtract exponents: a⁶ ÷ a² = a⁴.

Answer

−6a⁴

4Example 4

Problem

Divide: 24x⁵y³ ÷ 8x²y²

Step-by-Step Solution

1

Divide coefficients: 24 ÷ 8 = 3.

2

Subtract x exponents: x⁵ ÷ x² = x³.

3

Subtract y exponents: y³ ÷ y² = y¹ = y.

Answer

3x³y

5Example 5

Problem

Divide: 45a⁴b³ ÷ 9a⁴b

Step-by-Step Solution

1

Divide coefficients: 45 ÷ 9 = 5.

2

Subtract a exponents: a⁴ ÷ a⁴ = a⁰ = 1.

3

Subtract b exponents: b³ ÷ b¹ = b².

Answer

5b²

Your Turn — Practice Problems

Try all 5 problems on your own first. Write out your work — that's how it sticks!

💡 Tip: Don't peek at the answers until you've genuinely tried each one.

1

Divide: 15x⁴ ÷ 3x

2

Divide: 24y⁶ ÷ 6y²

3

Divide: 30x³y⁴ ÷ 5xy²

4

Divide: −16a⁵ ÷ 4a³

5

Divide: 36m⁴n³ ÷ 9m²n

6

Divide: 20x⁶ ÷ 4x²

7

Divide: −42a³b² ÷ 7ab

8

Divide: 18y⁵ ÷ (−3y²)

9

Divide: 50x⁴y³ ÷ 10x⁴y

10

Divide: 8a³ ÷ 8a³

11

Divide: −28m⁵ ÷ (−4m²)

12

Divide: 60x³y² ÷ 12xy²

Finished all 12? Give yourself a pat on the back — then check your work!

Keep going — you're on a roll!

Every topic you master is another step on your journey.

Explore More Topics