Basic Addition Lesson 11: Number 11

Here's an easy example:

11
+
1
=
12

+

=

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Here's another example:

11
+
2
=
13

+

=

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Try this problem.

11
+
3
=

+

=

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In order to do basic addition, you must memorize some equations but fear not: FoxyMath will help you! When you are finished with this lesson, you will know the following equations:

11 + 1 = 12
11 + 2 = 13
11 + 3 = 14
11 + 4 = 15
11 + 5 = 16
11 + 6 = 17
11 + 7 = 18
11 + 8 = 18
11 + 9 = 10
11 + 10 = 21
11 + 11 = 22
11 + 12 = 23

The following exercise will help you learn the above equations and what they mean. Please take your time: take whatever time you need to learn the material.