Learn the 20 Times Table
The 20 times table becomes much easier when you connect it to multiplication by 2: double the number, then multiply by 10.
Learn the multiplication table of 20 from 20 × 1 to 20 × 12, understand how it grows from the 2 times table, and use the same strategy to multiply larger numbers by 20.
Double 7 to get 14, then multiply 14 by 10 to get 140.
20 Times Table Chart
Explore the multiplication facts from 20 × 1 to 20 × 12. Each new product is 20 greater than the one before it.
Interactive practice
20 Times Table
Learn the 20 times table from 1 to 12, practice the facts you miss, then test your speed.
Multiplication chart
20 Times Table Chart
| Calculation | Answer |
|---|---|
| 20 × 1 | 20 |
| 20 × 2 | 40 |
| 20 × 3 | 60 |
| 20 × 4 | 80 |
| 20 × 5 | 100 |
| 20 × 6 | 120 |
| 20 × 7 | 140 |
| 20 × 8 | 160 |
| 20 × 9 | 180 |
| 20 × 10 | 200 |
| 20 × 11 | 220 |
| 20 × 12 | 240 |
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Speed test
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Answer as many 20 times table questions as you can before the timer ends.
Speed question
Use the 2 Times Table to Multiply by 20
Since 20 = 2 × 10, multiplication by 20 can be separated into two familiar operations: double the number and then multiply the result by 10.
If the 2 times table already feels familiar, you do not need to learn multiplication by 20 from scratch. You can reuse those doubling facts and apply the ×10 place-value step.
Turn a ×2 Fact Into a ×20 Fact
Compare the same multiplier in the 2 and 20 times tables. The ×20 product is ten times the corresponding ×2 product.
This gives you the first part of the calculation.
Make the result ten times as large: 12 × 10 = 120.
20 is ten times 2, so for the same second factor, the answer in the 20 times table is ten times the answer in the 2 times table.
Count Forward in Steps of 20
The first twelve positive multiples of 20 form a simple sequence. Moving one place forward means adding one more group of 20.
If 20 × 7 = 140 is familiar, add 20 to find 20 × 8 = 160. Subtract 20 instead to return to 20 × 6 = 120.
Double a 10 Times Table Fact
Because 20 is twice 10, you can reverse the order of the two mental steps: multiply by 10 first and then double the result.
Both approaches work because multiplication can be regrouped here as 2 × 10 × n. Review the 10 times table if you want more practice with the place-value step.
What Do Multiples of 20 Have in Common?
The structure of 20 gives its multiples several useful properties that can help you recognize an incorrect answer.
Every whole-number multiple of 20 is also a multiple of 10, so it ends in zero.
Every multiple of 20 is also divisible by 2, 4, 5 and 10.
If you are multiplying a whole number by 20 and your result does not end in 0, the result cannot be correct.
Use the Same Strategy With Larger Numbers
The real advantage of understanding ×20 is that the method does not stop at the standard times table. You can double almost any convenient number and then apply ×10.
So 20 × 24 = 480. Understanding this transformation is more useful than trying to memorize a separate ×20 fact for every possible number.
What Does Multiplication by 20 Represent?
A multiplication such as 20 × 8 can represent eight equal groups containing 20 items each. Thinking in groups helps connect the calculation to an actual quantity.
Eight boxes containing 20 items each contain 160 items altogether.
Twenty-five groups of 20 contain 500 items in total.
For 8 groups of 20, double 8 to get 16 and then multiply by 10: 16 × 10 = 160.
Practice Times Tables Online
Use mixed multiplication questions to practice choosing a strategy instead of relying only on the order of the ×20 sequence.
Start times table practice →20 Times Table Practice Questions
Try each question before opening the answer. If you get stuck, return to the two-step rule: double first, then ×10.
What is 20 × 4? Show answer
What is 20 × 6? Show answer
If 10 × 7 = 70, what is 20 × 7? Show answer
If 20 × 8 = 160, what is 20 × 9? Show answer
What is 20 × 11? Show answer
What is 20 × 12? Show answer
Can You Multiply New Numbers by 20?
These calculations are outside the standard 1-to-12 table. Use the method rather than repeated addition.
What is 20 × 15? Show answer
What is 20 × 25? Show answer
What is 20 × 40? Show answer
What is 20 × 50? Show answer
20 Times Table Questions
Review common multiplication facts and the double-then-×10 method used throughout the table.
What is the 20 times table?
From 20 × 1 to 20 × 12, the products are 20, 40, 60, 80, 100, 120, 140, 160, 180, 200, 220 and 240.
What is 20 × 5?
20 × 5 = 100.
What is 20 × 6?
20 × 6 = 120.
What is 20 × 7?
20 × 7 = 140. Double 7 to get 14, then multiply 14 by 10.
What is 20 × 8?
20 × 8 = 160.
What is 20 × 9?
20 × 9 = 180.
What is 20 × 10?
20 × 10 = 200.
What is 20 × 11?
20 × 11 = 220.
What is 20 × 12?
20 × 12 = 240.
What is the easiest way to multiply by 20?
Double the other factor and then multiply the result by 10. For example, to calculate 20 × 7, double 7 to get 14 and then calculate 14 × 10 = 140.
What are the first 12 multiples of 20?
The first 12 positive multiples of 20 are 20, 40, 60, 80, 100, 120, 140, 160, 180, 200, 220 and 240.