quantity that can change and is represented with a letter

Using Variables to Write Expressions Flashcards

1

twelve pencils decreased by a number n

12 - n
12n
n - 12
12 + n

2

three dollars more than the cost of c

3 + c
c + 3
c3
c-3

3

6 times a distance d

d + 6
6d
d ÷ 6
6 - d

4

Multiplication problems can be written like 5 x r and 5r.

True
False

5

5 times a number b

5b
5 + b
5 - b
b - 5

6

three less than two times an amount x

3x -2
3 - 2 - x
2x - 3
32 -x

7

w lunches at $7 each

7 + w
7 ÷ w
7w
7-w

8

a number j divided by 3

3 x j
3j
j ÷ 3
3 ÷ j

9

Which expression shows a quantity of rolls, r, added to 8 bagels?

8r
r - 8
8 + r
8 ÷ r

10

a number i added to 50

50 - i
50 ÷ i
50 + i
50i

11

7 less than a number d

d - 7
7 - d
7d
7 + d

12

What is an algebraic expression?

mathematical phrase that has one variable and one operation
an answer to an addition problem
an answer to a division problem
a quantity that is represented with a letter

13

a apples divided by 8

8 - a
8a
a ÷ 8
8 ÷ a

14

the sum of 9 and a number x

9x
9÷x
9 + x
9 - x

15

What is a variable?

a mathematical phrase that uses operations and letters
the answer to a subtraction problem
quantity that can change and is represented with a letter
the answer to a multiplication problem

Using Variables to Write Expressions

Questions 15

Using Variables to Write Expressions

Questions 15