What is 21 Divided by 30? Answer is 0.7
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The answer to 21 divided by 30 is 0.7. This means if you divide 21 into 30 equal parts, each part will be 0.7. Since 21 is smaller than 30, the quotient (answer) is less than 1 — a decimal value.
Let’s explore different methods to solve and understand this calculation.
21 ÷ 30 Using Long Division
To solve 21 ÷ 30 using the long division method:
- Write 21 under the division bar and 30 outside it.
- Since 30 cannot go into 21 (as 21 < 30), we add a decimal point and a zero, making it 210.
- Now, check how many times 30 can go into 210.
- 30 × 7 = 210 exactly.
- Write 0.7 as the quotient because we moved one decimal place.
- Subtract 210 – 210 = 0.
- The remainder is 0, confirming that 21 ÷ 30 = 0.7.
Using the Distributive Property
We can also solve using the distributive property of division.
Let’s represent 21 as 30 × 0.7.
30×0.7=21
Now, if we reverse it:
21÷30=0.7
This confirms the same result without needing long division.
Other Divisions of 21
Let’s see how 21 divides by other numbers for comparison:
| 21 Divided By | Answer |
|---|---|
| 21 ÷ 2 | 10.5 |
| 21 ÷ 3 | 7 |
| 21 ÷ 7 | 3 |
| 21 ÷ 10 | 2.1 |
| 21 ÷ 30 | 0.7 |
FAQs
1. Is 21 divided by 30 a whole number?
No. The result is a decimal (0.7) because 21 is smaller than 30.
2. What is the remainder when 21 is divided by 30?
There is no remainder because 21 divides evenly into 30 as a decimal result of 0.7.
3. How can I check my answer?
Multiply the quotient by the divisor:
0.7 × 30 = 21, which confirms the calculation is correct.
Here are other divisions:
