Table of 21
Multiplication table of 21
More multipliers from the time table of 21
Have you finished learning the first 10 results and are you interested in continuing?
To continue expanding your knowledge of this table, you can see the results below, starting from multiplier 11 and going up to 100.
Suggestions for learning the 21 time table more easily
The 21 times table can be taught as the sum of multiplying by 20 and then adding the original number once more. This method builds on the prior knowledge of the multiplication table of 20 making the learning process easier by breaking down the multiplication into more manageable parts.
Practical tips:
- Show how to multiply the number by 20 and then add the same number. For example, to calculate 21 x 4, multiply 4 by 20 to get 80, and then add 4 to get 84.
- Decomposition: Break the multiplication into two steps (multiply by 20 and add the base number). Example: 21 x 4 is the same as (20 x 4) + 4 = 80 + 4 = 84.
- Number patterns: Notice that the results follow a predictable pattern. Example: 21, 42, 63, 84, etc.
- Use of objects: Use objects to form groups of twenty-one and see the results. Create activities that involve planning events or activities where each unit costs 21 currency units, allowing the practical application of the 21 times table in meaningful, everyday contexts.
Mnemonics:
- “Twenty and one, simple sum,” a way to remember that multiplying by 21 is simply adding the product of 20 plus the original number.
- Rhyme: “Twenty-one, forty-two, sixty-three, keep adding and don’t slip.”
- Visualization: Imagine forming groups of twenty-one objects and adding one more to see how it multiplies.
Exercises for the table of 21
To memorize the multiplication table of Twenty One, we first suggest doing the exercises in ascending order.
Once you’ve completed the previous exercises, you can move on to the scrambled exercises related to the multiplication of 21, which are more challenging.
21 Multiplication table images for printing in .PDF
At the bottom, you will find multiple images corresponding to the multiplication table of 21 in PDF format, so you can print it and study. Additionally, you will have images with exercises to reinforce your learning by practicing this table.
Printable image exercises for the table of 21
In order to solidify your knowledge, we suggest that, in addition to studying the theory presented in this article, you practice with the exercises from the multiplication table of 21 that we’ve organized. These are available as an image that you can open (in PDF format) download and print to practice whenever you wish.
-724x1024.jpg)
