# Teas V Math

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1. This termis the set of whole positive and negative numbers, including zero. (not including decimals or fractions
Integers
2. What is a Prime number?
A whole number greater than 1 that can only be divided by 1 and itself.
3. What is a composite number?
A whole number greater than 1 that is not a prime number and can be divided by numbers other than 1 and itself.
4. What is a rational number?
What is an irrational number?
• Rational Number: Numbers that include all integers, decimals, and fractions: anny terminating or repeating decimal number is a national number.
• Irrational Number: numbers that cannot be written as fravtions or decimals. Examle, pi is an irrational number because it doesnt end (3.1415.....)
5. Define these terms of operation:
1. Sum
2. Difference
3. Product
• Difference: results from subtraction
• Product: results from multiplication
6. This term is a superscript that indicates how many times the base number is to be multiplied by itself.
Exponent
7. How is 2 raised to the power of -2 solved?
8. List the order of operations? (PEMDAS)
• Paranthesis
• Exponents
• Multiplication
• Division
• Subtraction
• **Multiplication and division have equal presidence, as do addition and subtraction, so those pairs are simply worked from left to right in order**
9. What is:
5 + 20 ÷ 4 x (2+3)^2
10. What is:
2^3  +  2^4
• = 2^7  =  128
• Add exponents to together when the base number is the same
11. What are the 10 perfect square roots from 1-100?
1, 4, 9, 16, 25, 36, 49, 64, 81, 100
12. Write 0.0002304 in scientific notation
2.304 x 10^-4
13. What is a common factor?
• A number that divides exactly into two or more other numbers.
• Examples: Factors of 12 are 1,2,3,4, and 12
• 1 x 12
• 2 x 6
• 3 x 4
• etc.
14. What is prime factor?
• A prime factor is also a prime number.
• Prime factor of 12 are 2 and 3 (2 and 3 are prime numbers)
15. What is GCF? What is the GCF of 15 and 35?
• GCF (greatest common factor) is the largest number that is a factor of two or more numbers.
•  - The greatest number that goes into both 15 and 35 is 5.
• * 15 (1,3,5,15)
• * 35 (1,5,7,15)
16. Define proper and improper fraction.
• Proper Fraction: a fraction whose denominator is greater than its numerator
• Improper Fraction: a fraction whose numerator is greater than its denominator
17. Write 15% as a fraction and simplify
15% = 15/100 = 3/20
18. Write .8 as a fraction and percent
.8 = 4/5 = 80%
19. what is 2.5 x 4?
• Easiest way is to multiply 25 x 4 = 100
• Then add a decimal point based on the number of decimal places in the equation.
• 2.5 x 4 = 100 / 10 = 10.0
20. What is 30% of 120? What is the word "of" referring to?
• The word "of" indicates multiplication
• First convert 30% to a decimal, then multiply.
• 30% -> 0.30 x 120 = 36

## Card Set Information

 Author: edeleon ID: 320777 Filename: Teas V Math Updated: 2016-06-09 00:00:29 Tags: Mathematics Folders: Teas V Description: Study guide: secrets of TEAS V Exam Show Answers:

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