| A | B |
|---|
| expression | a mathematical phrase containing variables, constants, and operation symbols |
| equation | a mathematical sentence stating that two expressions are equal |
| variable | a quantity that can change or vary |
| constant | a quantity that does not change |
| sum | the result of adding numbers |
| difference | the result of subtracting numbers |
| product | the result of multiplying numbers |
| quotient | the result of dividing numbers |
| rounding | adjusting a number to make it more convenient to use |
| place value | the multiple of ten telling how much a digit represents |
| compatible numbers | pairs of numbers that can be computed easily |
| scientific notation | writing a number as the product of a decimal and a power of 10 |
