Unit 1 Flashcards
What is a variable?
a symbol that stands for one or more numbers
What is an algebraic expression?
a mathematical phrase that uses numbers, variables and operations
What are some verbal expressions for Addition?
sum, plus, addend to, total, in all,all together, increased by
What are some verbal expressions for Subtraction?
minus, less than, difference, decreased by, take away
What are some verbal expressions for Multiplication?
multiplied, times, product, twice, of
What are some verbal expressions for Division?
dividend, quotient, divided by, divisor,
Algebraic expressions can also contain variables or letters.
True or False
true
Can you substitute in numbers for the variable?
yes
What does PEMDAS stand for?
parentheses, exponents, multiplication, division, addition, subtraction
What are natural numbers?
1,2,3,…
What are whole numbers?
0,1,2,3,…
What are integers?
…,-3,-2,-1,0,1,2,3,…
What is absolute value?
a number’s distance from zero on the number line
Two positives are always____________________?
positive
Where do you move on a number line when you are adding?
right/up
