| A | B |
| decimal | a number that uses a decimal point |
| standard form | all digits |
| word form | numbers are written as words |
| short-word form | places are written as digits and the periods are written as words |
| expanded form | a number written as a sum of the place value of its digits |
| round | to give an approximation to the nearest tenths, hundredths, thousandths etc. |
| exponent | a number that tells how many times the base is used as a factor |
| negative power of ten | A number in exponential form where the base is ten and the exponent is a negative integer |
| scientific notation | a form of writing of a number as the product of a power of 10 and a decimal number greater than or equal to 1 and less than 10 |
| inverse operations | operations that "undo" each other such as addition and subtraction or multiplication and division except multiplication by 0 |
| properties of equality | properties that state performing the same operation to both side of an equation keeps the equation balanced |