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Math K-Plus

Arithmetic - Learn How To Solve Simple Addition Problems

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Learn Integer Addition By Example



Foundation of Integer Addition
 0
+1

 1
 1
+1

 2
 2
+1

 3
 3
+1

 4
 4
+1

 5
 5
+1

 6
 6
+1

 7
 7
+1

 8
 8
+1

 9
 9
+1

10

The Decimal Number System has the following ten numerical symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

When we add the number 1 to another number we get the next larger number. Example: 0 + 1 = 1, 1 + 1 = 2, 2 + 1 = 3, ... 8 + 1 = 9, 9 + 1 = 10, 10 + 1 = 11, etc.

What is really interesting is when we add the number 1 to the number 9. The answer can no longer be shown as a single digit of 0 to 9. It takes two digits: 10. In other words, instead of using a new symbol to represent ten, we start reusing 0 to 9.

To make all of this much clearer, try our Addition Table and First Grade Addition Calculator. It provides numerical and visual answers to a math problem of your choice with step by step detailed explanations.