Math Terms
This phrase means to subtract.
Find the difference.
This term is used in math when you break down numbers into smaller parts.
Decompose
What does this symbol represent? "a"
The unknown number
Round this number to the nearest ten
79
80
When I add these two numbers, I quickly use mental math to solve.
9 + 7 = a
a=16
This phrase means to add.
Find the sum.
Any number.
What does this symbol represent? =
equivalent. Whatever is on the left side of the equation must have the same value as the right side of the equation.
Round this number to the nearest ten.
876
880
When I add these two number, I quickly use mental math to solve.
9 + 4 = a
a = 13
(a + b) + c = a + (b + c)
What property does this represent?
What is the meaning of the word "digit"?
Any number from 0-9. It can have a value based on its place value in a number.
What does this symbol mean? >
Greater than.
Round this number to the nearest hundred.
809
800
When I subtract these two numbers, I quickly use mental math to solve.
42 - 19 = a
42 - 20 = 22
22 +1 = 23
a = 23
a + b = b + a
That property does this represent?
Commutative Property of Addition.
This term is used to show number value. It has ones, tens, hundreds, and thousands.
Place Value
What does this symbol mean? <
Less than
Round this number to the nearest ten.
4
0
Mandy mande 27 pizzas. She made 19 pepperoni pizzas, 4 cheese pizzas, and the rest were sausage. How many pizzas were sausage?
4 pizzas were sausage.
0 + a = a
That property does this represent?
The Identit y Property of Addition
This term tell you to find the answer to a problem.
Solve
6
+ 7
________ -----> What does this symbol mean?
13
Equals
Round this number to the nearest hundred.
4,567
4,600
Becca put 91 books on a shelf. Of the books 28 were nonfiction, 13 were poetry books, and the rest were fiction books. How many books were fiction?
There were 50 fiction books.