quantity that can change and is represented with a letter

Duplicate of Using Variables to Write Expressions Flashcards

1

twelve pencils decreased by a number n

n - 12
12 - n
12n
12 + n

2

the sum of 9 and a number x

9x
9 + x
9÷x
9 - x

3

5 times a number b

5 + b
b - 5
5 - b
5b

4

What is a variable?

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

5

a number j divided by 3

3 ÷ j
3j
3 x j
j ÷ 3

6

What is an algebraic expression?

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

7

w lunches at $7 each

7 ÷ w
7w
7-w
7 + w

8

a apples divided by 8

8 - a
8 ÷ a
8a
a ÷ 8

9

7 less than a number d

7 + d
7 - d
7d
d - 7

10

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

8 + r
8r
8 ÷ r
r - 8

11

three less than two times an amount x

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

12

three dollars more than the cost of c

c + 3
3 + c
c-3
c3

13

6 times a distance d

6d
d ÷ 6
6 - d
d + 6

14

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

True
False

15

a number i added to 50

50 - i
50 + i
50 ÷ i
50i

Duplicate of Using Variables to Write Expressions

Questions 15

Duplicate of Using Variables to Write Expressions

Questions 15