In each blank, try to type in the
word that is missing. If you've
typed in the correct word, the
blank will turn green.
If your not sure what answer should be entered, press the space bar and the next missing letter will be displayed. When you are all done, you should look back over all your answers and review the ones in red. These ones in red are the ones which you needed help on. Question: Value Answer: makes a negative number positive. Positive numbers and 0 are left . The absolute value of x is written |x|. We write |–6| Question: Real Answer: The numbers we use to measure real-world quantities, such as length, temperature, or volume, are called real . All the rational and irrational numbers make up the set of real numbers. The number line is a model of the set of real numbers. Question: Number Answer: A number that can be expressed as the quotient of two integers. , mixed numbers, decimals and integers are all rational numbers, because they may be expressed as a quotient of two integers. Ex: 3 1/4 Question: Irrational Answer: Some numbers cannot be written as a of two integers, and these are called irrational numbers. Question: Variable Answer: A letter that stands for a number in a mathematical expression is a 'var'iable, because its value can vary. In the expression 4n + 7, n is a variable Question: Answer: A mathematical phrase made up of variables and/or numbers and is called an expression. Ex: 2ab + 3ab - a Question: Terms Answer: in an expression, the are the elements separated by the plus or minus signs. In the expression 2ab + 3ab - a, the terms are 2ab, 3 ab, and a Question: Coefficient Answer: A number that appears before a letter in a term. For in the term 2ab, 2 is the coefficient. Question: Constant Answer: A term that has only one number and no variables is called a constant, because its value doesn't vary. In the 2ab + 3b + 6, the number 6 is a constant Question: Expressions Answer: An algebraic expression is one or more terms in a phrase. It can include variables, constants, and operating symbols, such as plus and minus signs. It's only a phrase, not the whole sentence, so it doesn't include an equal sign. Question: the sum of three times a number and Answer: 3x + Question: The words ""the sum of"" tell us we need a plus sign because we're going to add three times a number to eight. The words ""three times"" tell us the term is a number multiplied by three.Answer: Question: In this expression, we don't need a multiplication sign or parenthesis. Phrases like ""a number"" or ""the number"" tell us our expression has an unknown quantity, called a . In algebra, we use letters to represent variables.Answer: Question: the product of a number and the same number less Answer: x(x – 3) Question: The words ""the product of"" tell us we're going to multiply a number times the number less 3. In this case, we'll use parentheses to the multiplication. The words ""less 3"" tell us to subtract three from the unknown number. "Answer: Question: a number divided by the same number less Answer: x/x-5 Question: The words ""divided by"" tell us we're going to divide a number by the difference of the number and 5. In this case, we'll use a fraction to represent the division. The words ""less 5"" tell us we need a minus sign because we're going to five."Answer: Question: A number n 3 is equal to 120. Answer: A number n times 3 is to 120. Question: This is an easy one. The word ""times"" tells you that you must multiply the variable n by 3, and that the result is equal to 120. Here's how to this equation: "Answer: Question: Commutative property of Answer: a+b = b+a Question: property of MultiplicationAnswer: ab = Question: Property of Addition Answer: (a+b) + c = a + (b+c) Question: Property of MultiplicationAnswer: (ab)c = a(bc) Question: Property Answer: a(b+c) = ab + Question: Density Answer: Between any two real , there is always another real number. Question: Identity Property of Answer: a + 0 = Question: Property of MultiplicationAnswer: a * 1 = Question: Answer: greater than or to Question: ≤Answer: less than or equal Question: > Answer: than Question: < Answer: less Question: Solving addition and subtraction Answer: To an equation means to find a value for the variable that makes the equation true. Whatever you do to one side of the equation, you must also do to the other side. (Balance the scale) Question: Solving multiplication Answer: To a multiplication equation, use the inverse operation of division. Divide both sides by the same non-zero number. Question: Solving division Answer: To solve a division equation, use the inverse operation of multiplication. both sides by the same number. Question: Inequalities Answer: A sentence built from expressions using one or more of the symbols <, >, ≤, or ≥. Question: Answer: The number (written in superscript) used to express how many times a base is multiplied by Question: Base Answer: The number directly preceeding an Question: polynomial Answer: is a series of one or more terms that are added or subtracted, such as 3x + 2y - Question: To change from to decimal Answer: you move the decimal point two places to the Question: 9 + 10 =Answer: You thought I was do it, didn't you? |
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