What is 120 divided by 8?

120 divided by 8 is 15.

Worked out below step by step, with a table of related values and a live calculator so you can change the numbers.

Answer
15
120 ÷ 8
Answer
15

Step-by-step working

  1. 1. Set up the division: 120 ÷ 8.
  2. 2. Divide: each of the 8 equal parts gets 15.
  3. 3. The answer is 15.

Check it: 15 × 8 = 120, back to the number you divided.

Formula

answer = dividend ÷ divisor

Division splits the first number into equal parts. Multiply the answer back by the divisor to check it.

Understanding 120 divided by 8

Division asks how many equal groups of size 8 fit into 120, or how 120 is shared across 8 equal groups. The quotient is 15.

Division is used for unit rates, averages, equal sharing and scale conversion. A non-terminating decimal may be rounded for display, while the calculator keeps the full value for the working.

Reasonableness and accuracy checks

  • Multiply the quotient 15 by the divisor 8; the result should return to 120, allowing for displayed rounding.
  • A divisor cannot be zero because no finite quotient is defined.
  • Compare the answer with a quick estimate using nearby numbers before relying on it.

Check the division with the inverse multiplication fact

Exact division can be verified by reversing the operation. If 120 ÷ 8 = 15, then multiplying the quotient by the divisor must return the original dividend 120.

  1. 1.Start with the quotient 15.
  2. 2.15 × 8 = 120.
  3. 3.The product returns to 120, confirming the division.

A second worked example

What is 128 divided by 8?

128 ÷ 8 = 16

Set up the division: 128 ÷ 8. Divide: each of the 8 equal parts gets 16. The answer is 16. This uses the same method with different numbers, so it shows how the rule transfers instead of only repeating the original answer.

Quotient insight for 120 ÷ 8

The quotient 15 is an exact whole number. The integer fraction 120/8 reduces to the ratio 15:1. A reliable reverse check is quotient × divisor = dividend; any small mismatch after using the displayed decimal can come from rounding only.

Where division is useful

Division is used for equal sharing, unit rates, averages, cost per item, speed and proportional scaling. Keeping track of which number is the dividend and which is the divisor preserves the meaning of the quotient and prevents reciprocal-answer mistakes.

Common mistakes to avoid

  • Reversing dividend and divisor; 120 ÷ 8 is not generally the same as 8 ÷ 120.
  • Rounding a non-terminating quotient too early and then reusing that shortened value in later calculations.
  • Treating division by zero as a valid finite result; a zero divisor is undefined in ordinary arithmetic.

Questions about this calculation

Is there another way to check What is 120 divided by 8?

Exact division can be verified by reversing the operation. If 120 ÷ 8 = 15, then multiplying the quotient by the divisor must return the original dividend 120. Start with the quotient 15. 15 × 8 = 120. The product returns to 120, confirming the division.

What is the most common mistake with What is 120 divided by 8?

Reversing dividend and divisor; 120 ÷ 8 is not generally the same as 8 ÷ 120. After correcting that setup, verify the result independently: Check it: 15 × 8 = 120, back to the number you divided.

Can I use the same method with different numbers?

Yes. What is 128 divided by 8? Set up the division: 128 ÷ 8. Divide: each of the 8 equal parts gets 16. The answer is 16. This uses the same method with different numbers, so it shows how the rule transfers instead of only repeating the original answer. The live calculator above lets you replace both inputs and recalculate without changing the underlying method.

How can I tell whether 15 is reasonable here?

The quotient 15 is an exact whole number. The integer fraction 120/8 reduces to the ratio 15:1. A reliable reverse check is quotient × divisor = dividend; any small mismatch after using the displayed decimal can come from rounding only. Use that scale or ratio check together with the reverse calculation before reusing the result in another calculation.

120 divided by other numbers

120 divided by other numbers
Divisor120 ÷ divisor
260
340
430
524
620
815
1012
1210
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