Composite number - correct answer A number with more than two factors
Divided evenly by itself and 1
Prime number - correct answer A whole number that has exactly two factors, 1 and
itself.
Factorial - correct answer Represented by an exclamation point(!)
Find the product(multiplying) a whole number and all the whole numbers less than it, down to 1.
Example: (6!) is 6x5x4x3x2x1=720
Adding and Subtracting Fractions - correct answer · Least common multiple to make
denominators the same
•do the same to the top, that you did to the bottom
· Add together numerators, while keeping the denominators the same
· Simplify if needed
Example: 3/5 + 3/10
•multiple is 2: 5x2=10
•common denominator is 10 (3/10+3/10)
•multiply 3x2=6 (3/10+6/10)
•the numerators 3+6=9
Answer: 9/10
Multiplying Fractions - correct answer 1. Multiply the numerators.
2. Multiply the denominators.
3. Simplify if needed
Example: 2/4x4/6= 8/24
8 divided by 4=2
, 24 divided by 4=6
Answer: 2/6
Dividing Fractions - correct answer Invert (reciprocal) the second fraction and
multiply
Example: 1/3 divided by 2
1/3 multiplied by 1/2
Answer: 1/6
Converting Improper Fractions to Mixed Numbers - correct answer divide the
numerator by the denominator.
7/2, ask "how many times can 7 go into 2 evenly?" answer is 3. "how much is left over?" 1. the
remainder the the numerator of the fractional portion of the mixed number and the denominator
KEEP DENOMINATOR SAME
Answer: 3 1/2
Converting a Whole number into a fraction - correct answer Multiply the whole
number by the denominator and add the numerator
KEEP DENOMINATOR SAME
7 2/3
7•3=21
21/3
Add 21+2
Answer: 23/3
Adding and subtracting decimals - correct answer Line up the decimal points and
proceed as usual