Writing and Solving Basic Expressions

A piece of ribbon is 𝑦 cm long. Ashley cut it into 4 equal pieces to do her 4 sisters’ hair. Write the expression for the amount of ribbon used for each sister.

Olivia had 14 needles in her sewing kit, but she lost 𝑟 needles. Write the expression for the number of needles in her sewing kit now

The zoo needs to hire 𝑏 staff members for each exhibit. Write the expression for the number of staff members they need to hire for 20 exhibits.

Translate this phrase into an algebraic expression.

The difference of 3 times a number and 7

Use the variable n to represent the unknown number.

• 3 - 7n

• 3n - 7

• 3n + 7

• 3 / 7n

Translate this phrase into an algebraic expression.

80 more than a number

Use the variable B to represent the unknown number.

• 80B

• B-80

• B+80

• B÷80

Translate this phrase into an algebraic expression.

2 times the sum of a number and 15

Use the variable B to represent the unknown number.

• 2(B+15)

• 2B+15

• 2B×15

• 2×15B

Write a word phrase to represent the following algebraic expression:

9n+1

• the quotient of 9 and a number plus 1

• the product of 9 and a number plus 1

• 1 more than the quotient of 9 and a number

• 1 more than the product of 9 and a number

Translate this phrase into an algebraic expression.

5 less than a number

Use the variable v to represent the unknown number.

• 5 - v

• 5v

• 5 + v

• v - 5

the difference of a number and six

• x + 6

• x - 6

• 6 - x

• x/6

Write an expression to match the words:
the product of five and nine

• 5 x 9
• 5 + 9
• 9 - 5
• 95