Long Division Calculator › 21 divided by 12
21 Divided by 12
21 ÷ 12 = 1.75
| Exact decimal | 1.75 |
| Whole-number quotient | 1 |
| Remainder | 9 |
| As a fraction | 21/12 |
Check: 1 × 12 + 9 = 21.
Long division, step by step
Working through each digit of 21 from left to right, dividing by 12 and carrying the remainder:
| Bring down | Divide | Digit | Left over |
| 2 | 2 ÷ 12 | 0 | 2 |
| 1 | 21 ÷ 12 | 1 | 9 |
Reading the digit column top to bottom gives the quotient 1 with 9 left over.
A terminating decimal
21 ÷ 12 stops after 2 decimal places: it equals exactly 1.75. The division is clean because 12's only prime factors are 2 and 5.
Divide 21 by other numbers
21 ÷ 2 · 21 ÷ 3 · 21 ÷ 4 · 21 ÷ 5 · 21 ÷ 6 · 21 ÷ 7 · 21 ÷ 8 · 21 ÷ 9 · 21 ÷ 10 · 21 ÷ 11
Nearby divisions by 12
Frequently asked questions
What is 21 divided by 12?
21 ÷ 12 = 1.75. As a whole number the quotient is 1 with a remainder of 9.
Is 21 ÷ 12 a terminating or repeating decimal?
It terminates: 21 ÷ 12 = 1.75 exactly, with 2 decimal places.
Is 21 divisible by 12?
No. The nearest multiples of 12 are 12 (1 × 12) and 24 (2 × 12), so 21 leaves a remainder of 9.