Expressions Learnzillion Codes:

LZ2335, LZ2360 for Equivalent

LZ2846, LZ2912, LZ3015, LZ2868, LZ2871 for Variables

LZ653, LZ654 for Evaluating

LZ2335, LZ2360 for Equivalent

LZ2846, LZ2912, LZ3015, LZ2868, LZ2871 for Variables

LZ653, LZ654 for Evaluating

Expressions are a way to write a math situation.

Variable- a letter that represents an unknown amount

Expressions do not have an answer without being told what number to substitute the variable for.

Variable- a letter that represents an unknown amount

Expressions do not have an answer without being told what number to substitute the variable for.

- For example: The sum of a number and two can be written as x + 2. If we are told that x is 4, then the answer is 6. If we are told that x is 5, then the answer is 7.