Long Division Calculator › 21 divided by 10
21 Divided by 10
21 ÷ 10 = 2.1
| Exact decimal | 2.1 |
| Whole-number quotient | 2 |
| Remainder | 1 |
| As a fraction | 21/10 |
Check: 2 × 10 + 1 = 21.
Long division, step by step
Working through each digit of 21 from left to right, dividing by 10 and carrying the remainder:
| Bring down | Divide | Digit | Left over |
| 2 | 2 ÷ 10 | 0 | 2 |
| 1 | 21 ÷ 10 | 2 | 1 |
Reading the digit column top to bottom gives the quotient 2 with 1 left over.
A terminating decimal
21 ÷ 10 stops after 1 decimal place: it equals exactly 2.1. The division is clean because 10'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 ÷ 11 · 21 ÷ 12
Nearby divisions by 10
Frequently asked questions
What is 21 divided by 10?
21 ÷ 10 = 2.1. As a whole number the quotient is 2 with a remainder of 1.
Is 21 ÷ 10 a terminating or repeating decimal?
It terminates: 21 ÷ 10 = 2.1 exactly, with 1 decimal place.
Is 21 divisible by 10?
No. The nearest multiples of 10 are 20 (2 × 10) and 30 (3 × 10), so 21 leaves a remainder of 1.