quantity that can change and is represented with a letter

Using Variables to Write Expressions Flashcards

1

5 times a number b

5 - b
5b
5 + b
b - 5

2

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

8 ÷ r
r - 8
8 + r
8r

3

a apples divided by 8

a ÷ 8
8 ÷ a
8a
8 - a

4

the sum of 9 and a number x

9x
9÷x
9 - x
9 + x

5

What is a variable?

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

6

6 times a distance d

d ÷ 6
d + 6
6 - d
6d

7

a number i added to 50

50 - i
50 ÷ i
50i
50 + i

8

three less than two times an amount x

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

9

7 less than a number d

7 - d
7 + d
7d
d - 7

10

What is an algebraic expression?

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

11

a number j divided by 3

3 ÷ j
3 x j
3j
j ÷ 3

12

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

True
False

13

twelve pencils decreased by a number n

12 - n
12 + n
12n
n - 12

14

three dollars more than the cost of c

c3
c-3
3 + c
c + 3

15

w lunches at $7 each

7w
7-w
7 + w
7 ÷ w

Using Variables to Write Expressions

Questions 15

Using Variables to Write Expressions

Questions 15