What is a table of 11?
Table of 11
| 11 | x | 11 |
|---|---|---|
| 11 | x | 110 |
| 11 | x | 121 |
| 11 | x | 132 |
| 11 | x | 143 |
How do you explain 11 times tables?
- The 11 times table is made by counting up in elevens.
- To multiply a number from 1 to 9 by 11, simply repeat the digit.
- We can remember 11 × 11 = 121 and 12 × 11 = 132 because the outer digits of each answer add up to make the middle digit.
How do you teach 11 multiplication?
To multiply any two-digit number by 11, simply add the digits of the number together and then put this sum between the original two digits. For example, to quickly find the answer to 11 x 53, start by adding the two digits of the number 53 together to get 5+3=8.
What is the 11 spelling?
List of Number Names from 1 to 50
| 1 = One | 2 = Two |
|---|---|
| 9 = Nine | 10 = Ten |
| 11 = Eleven | 12 = Twelve |
| 13 = Thirteen | 14 = Fourteen |
| 15 = Fifteen | 16 = Sixteen |
Why does the 11 trick work?
Multiplying numbers by 11 is the same as multiplying it by 10 and then adding to the number. If we have a number abcd where a, b, c, and d are digits, for example, and we multiply it by 11, the we can multiply it by 10 and then add abcd. And the placement of the numbers will look like the one below.
Why does the 11 multiplication trick work?
What is the rule of divisibility by 11?
Divisibility rules for numbers 1–30
| Divisor | Divisibility condition |
|---|---|
| 11 | If the number of digits is even, add the first and subtract the last digit from the rest. The result must be divisible by 11. |
| If the number of digits is odd, subtract the first and last digit from the rest. The result must be divisible by 11. |