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Math Lexicon 3
| Term | Definition |
|---|---|
| Expression | Numbers, symbols and variables grouped together that show the value of something. It does not have an equal sign. Example: 2 x 3 is an expression |
| Variable | It is the unknown value that you are missing and are trying to find. It is represented by a letter in a number sentence or mathematical expression. |
| Dividend | It is the whole that is being divided into equal groups |
| Divisor | The number you divide by; It is the number of equal groups that you need to make. Example: dividend ÷ divisor = quotient |
| Quotient | The answer to a division problem. The quotient can just be a whole number, or a whole number and a remainder. |
| Remainder | The part that is left over when you cannot divide any more. |
| Divisible | When one number can be divided by another and the result is an exact whole number with nothing left over...no remainder! |
| Inverse Operation | Opposite operations that will ‘undo’ each other. Example: addition and subtraction are inverse or opposite operations and multiplication and division are inverse operations. |
| Input/Output Table or Function Table | These tables give pairs of numbers that follow a certain pattern or rule. You must find the rule that when applied to the input results in the output. |
| Rule | A numerical expression that describes the relationship between pairs of numbers in an input/output table. A rule tells what operation to perform on the input so that the result of the computation is the output. |
| Area | The number of square units that are needed to cover the inside of a figure. The formula for finding area of a rectangle or square is: A = Length X Width or A = l x w |
| Perimeter | The distance around the outside of a figure. The formula for finding area of a rectangle or square is: P = l + w + l + w or P = 2l + 2w |
| Formula | A special type of equation that shows the relationship between different variables. Example: Formula for finding Area is A = l x w |
| Strip Diagram | A diagram or drawing that shows the relationship between the different parts of a problem. An equation can be written using a variable to represent the unknown value that we need to solve the problem. |
Created by:
emily.forehand
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