Chapter 9

Expressio

ns

Words like total, altogether, more, and plus might tell you to add.

Words like each and per might tell you to multiply.

Words like less than, fewer, and left might tell you to subtract.

Words like shared and divided might tell you to divide.

9.1 Expressions

Jeff has 4 pages of stamps with 8 stamps on each page. He uses 5 of the stamps. How many does he have left?

Problem

(4 x 8 ) – 5

Find the value

(4 x 8) - 5

32 - 5

27

Solve

Denise had 95 cents. She spent 4 dimes. How much money does she have?

Choose the expression that matches the words.

(95 - 4) x 10

or

95 - (4 x 10)

The teacher divided 30 blue markers equally among 5 boxes. Then she put 1 more red marker in each box. How many markers are in each box?

Choose the expression

(30 ÷ 5) + 1

or

30 ÷ (5 + 1)

Find the value of the expressions

(4 x 6) – 2

24 ÷ 23

( 54 ÷ 9 ) – 1

Find the value of the expressions

(23 x 9 ) + 7

46 + ( 15 ÷ 3)

35 ÷ 5 x 32

Write an expression to match the words then find the value.

Lily had 15 postcards. She gave away 8 and then bought 2 more. How many cards does she have now.

Write an expression to match the words then find the value.

There are 6 rows with 5 desks in each row and 2 desks not in rows. How many desks are there in

all?