How to Subtract From Numbers Up to 20

      Subtraction is the opposite of addition.

When you subtract, you take away from a number.

      Subtracting 1 from a number is just like counting down by 1.

2 - 1 = 1

Think about it like jumping back one step on a number line:

Here are a few examples of subtracting 1:

3 - 1 = 2
10 - 1 = 9
13 - 1 = 12
20 - 1 = 19

      Subtracting 2 is just like counting down by 2.

4 - 2 = 2

Think about it like jumping back two steps on a number line.

Here are more examples for subtracting 2 from a number:

5 - 2 = 3
6 - 2 = 4
7 - 2 = 5
11 - 2 = 9
14 - 2 = 12
19 - 2 = 17
20 - 2 = 18

      Subtraction is like counting down based on the subtrahend.

      The subtrahend is the number you're taking away. It's the smaller number.

Memorization Trick:

Subtraction is a very useful skill, and a lot of math builds on it.

That's why it's important for you to have all the subtraction facts up to 20 memorized. ⚡️

First, pause and study these facts for subtracting with 3, 4, and 5:

Next, study these equations for subtracting 6, 7, and 8.

Lastly, get familiar with the equations for subtracting 9 and 10.

Nice job.

The best way to memorize these equations is to practice. Start the practice now.