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Use the equals sign

The equals sign represents that the quantities or expressions on its two sides have the same value, not that the answer must come after it. Within addition and subtraction situations using numbers up to 20, this understanding supports interpreting and writing equations in varied forms, such as 8+3=118+3=11, 11=8+311=8+3, and 8+3=6+58+3=6+5, while distinguishing true and false equations; symbolic manipulation with variables and more general algebraic equivalence are beyond this scope.

Detailed Explanation: Use the equals sign

The equals sign, ==, means “has the same value as.” It does not mean that the answer must come after it.

Look at both sides of the equals sign and find each side’s value.

Example

8+3=6+58+3=6+5
  1. Find the value on the left:
8+3=118+3=11
  1. Find the value on the right:
6+5=116+5=11
  1. Both sides equal 1111, so the equation is true:

8+3=6+58+3=6+5

The equals sign tells us that the two sides have the same value.

Learn by doing: Use the equals sign

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Addition - Balance Equation - One Digit, Two Terms


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