1. Unit 1: Numerical Understanding Integers and Positive Rational Numbers
Pictorial model- a picture describing a situation or event
Justify- to defend or uphold as warranted or well-grounded-to back-up.
Ascending-moving upward; rising
Ex. 2, 3, 4, 5, 6,
Descending-to go or pass from a higher to a lower place; move or come down
Ex. 10, 9, 8, 7, 6
Equivalent-equal in value or measure.
Ex. 5 = 5
Inequality-the condition of being unequal. Ex
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2. Unit 1 (cont.)
Positive rational numbers- a positive number that can expressed as a fraction
Ex. 4/1, 50%, 3 1/5, etc.
Consecutive- following one another in uninterrupted succession or order; such as 5, 6, 7, 8, 9,
Decimals- a number representing less one using the tenths, hundredths, etc.
Ex or .37
Terminating – has an ending point - stops Ex
Repeating- a number or group of numbers that occurs again and again
Ex …
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3. Unit 1 (cont.) Variety-a number of different types of things
Evaluate-to ascertain the numerical value of; to determine or set the value or amount of; appraise: to evaluate property
Conclusion-a result, issue, or outcome; a reasoned thought
Drawn-to come to a conclusion
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4. Unit 1 (cont.)
Improper fraction-a fraction having the numerator greater than the denominator.
Ex /2
Mixed numbers-a number consisting of a whole number and a fraction or decimal,
Ex /2 or 4.5
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5. Unit 1 (cont.)
Percent- a number expressed on the basis of a rate or proportion per hundred ex: interest rate, discount, tax, tips.
Fraction-a way of expressing a quantity based on an amount that is divided into a number of equal-sized parts.
Integer-one of the positive or negative numbers 1, 2, 3, etc., or zero. Natural numbers-a positive integer or zero Counting numbers- a positive integer or zero
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6. Unit 1 (cont.)
Square Root: The square roots of a number “n” are the numbers “s” such that s^2=n. For example, the square roots of 4 are 2 and -2; the square roots of 9 are 3 and -3. (^ indicates exponent)
Squared: Square numbers are numbers that are the square of an integer, like 1 (which is 1^2), 4 (which is 2^2), 9 (which is 3^2), 16 (which is 4^2), 25 (which is 5^2), etc. (^ indicates exponent)
Perfect Square: an integer that is the square of the integer. Also has a whole number square root. Examples: 1,4,9,16…
Simplify: To reduce to its lowest form.
Order of Operation:
In mathematical operations, the standard order of operations is: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction. Within a category, operations are done from left to right.
Example: 2(6) 14
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7. (^ indicates exponent)
Unit 1 (cont.)
Parenthesis: either or both of a pair of signs ( ) used in writing to mark off an interjected explanatory or qualifying remark, to indicate separate groupings of symbols in mathematics and symbolic logic, etc.
Exponents: An exponent is when a little number is to the right and a bit above a number.  It's also called a "power.“
It also means to multiply the base (the big number) times itself that many times.
(^ indicates exponent)
Example: 3^4 which is read as 3 to the 4th power.
3^4 = 3 X 3 X 3 X 3
= 81
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