Watch: The 11x table
The 11 and 12 times tables have some interesting tricks that can help you to learn them.
Watch this Supermovers video with Clara the Hen to learn a fun song about the 11 times table.
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11 times table
Here is the 11 times table.
| 1 x 11 = 11 | 7 x 11 = 77 |
| 2 x 11 = 22 | 8 x 11 = 88 |
| 3 x 11 = 33 | 9 x 11 = 99 |
| 4 x 11 = 44 | 10 x 11 = 110 |
| 5 x 11 = 55 | 11 x 11 = 121 |
| 6 x 11 = 66 | 12 x 11 = 132 |
What do you notice about the numbers that are multiplied by 11 up to 9?
The number you a multiplying repeats itself in the tens and ones in the answer!
But what happens when you multiply 11 by 10, 11 or 12?
10 x 11 = 110
11 x 11 = 121
12 x 11 = 132
Can you see a pattern in the answers here?
The numbers that you multiply by 11 seem to separate into the hundreds and the ones columns, with a new digit in the tens.
How do you know what the digit in the tens column will be?
You add the digits in the hundreds and ones column together!
Does this work for numbers bigger than 12?
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Example 1
What is 32 × 11?
Step 1 - Separate the main number into the hundreds and the ones columns:
32 × 11 = 3 _2
The 3 moves to the hundreds column while the 2 stays where it is.
Step 2 - How do you know what the digit in the tens column will be?
You add the digits in the hundreds and ones column together
3 + 2 = 5
32 × 11 = 352
This trick will work for a lot of 2-digit numbers that you multiply by 11.
Be careful though, it doesn't work for all of them!
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Watch: 12 times table
Watch this Supermovers video with Chirpy co*ckerel to practise the 12 times table.
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What is the 12x table?
Take a look at the 12 times table and see if you can spot a pattern.
| 1 x 12 = 12 | 7 x 12 = 84 |
| 2 x 12 = 24 | 8 x 12 = 96 |
| 3 x 12 = 36 | 9 x 12 = 108 |
| 4 x 12 = 48 | 10 x 12 = 120 |
| 5 x 12 = 60 | 11 x 12 = 132 |
| 6 x 12 = 72 | 12 x 12 = 144 |
The digits in the ones column increases by 2 each time until it reaches zero, then the pattern begins again.
The digits in the tens increase almost in consecutive numbers.
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Activity
Quiz
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Use your times tables and more maths skills to defeat monsters and reclaim the Kingdom of Mathematica
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