Mental Math (Multiplication)
15 • 11 =
165
What is 1/4 of 40?
10
Name the four words used to describe the answers of addition, subtraction, multiplication and division.
Sum, Difference, Product and Quotient
3 + 5 • 2 =
13
What is the greatest common factor of 5 and 19?
1
33 • 11 =
363
What is 1/8 of 48?
Name the word that is used to describe letters used in place of numbers in an equation.
Variables
10 - 1 + 6 ÷ 2 =
12
What is the greatest common factor of 7 and 35?
7
120 • 9 =
1,080
What is 1/3 of 210?
70
Name the word that is used to describe each number in a multiplication problem (EX. 2 • 4 = 8, the two and four are called...)
Factors
4 - 9 • 5 • 2 =
-86
What is the greatest common factor of 32 and 64?
410 • 5 =
2,050
What is 2/5 of 300?
120
Name the word that is used to describe any whole positive or negative number, including zero.
Integer
(–8) – (–5) + 10 – 7 =
0
What is the greatest common factor of 18 and 60?
6
0.12 • 0.09 =
(must say the answer in proper decimal form, no "zero point...")
0.0108
(One hundred eight ten thousandths)
What is 5/9 of 108?
60
Name the phrase that is used when "Keep it, Change it, Flip it" is applied to a problem. (Two acceptable answers)
Multiplicative inverse or multiplying by the reciprocal
(-7) + (7 - [-9]) ÷ 4 =
-3
What is the greatest common factor of 17 and 52?
1