Real-Life Expressions: Checking Results & Reasonableness

A farmer has 12 apples and buys 5 more. Write an expression to represent the total number of apples he has now. What is the total? Is this reasonable?

• 10

• 15

• 17

• 20

Sarah has 3 times as many stickers as Tom. If Tom has 8 stickers, write an expression for the number of stickers Sarah has. How many does she have? Check if this makes sense.

• 24

• 16

• 20

• 12

A book costs $15 and a notebook costs $5. Write an expression to find the total cost if you buy 2 books and 3 notebooks. What is the total cost? Is this a reasonable amount?

• $30

• $25

• $50

• $45

In a class, there are 20 students. If 4 students are absent, write an expression to find the number of students present. How many are present? Does this seem reasonable?

• 12

• 18

• 14

• 16

A pizza has 8 slices. If 3 pizzas are ordered, write an expression for the total number of slices. How many slices are there? Is this a reasonable amount for a party?

• 20 slices. No, this is not enough for a party.

• 24 slices. Yes, this is a reasonable amount for a party.

• 30 slices. No, this is too much for a party.

• 16 slices. Yes, this is a reasonable amount for a party.

A toy costs $25 and is on sale for $5 off. Write an expression to find the sale price. What is the sale price? Is this a reasonable discount?

• $10

• $20

• $15

• $25

A garden has 4 rows of flowers with 6 flowers in each row. Write an expression to find the total number of flowers. How many flowers are there? Does this seem reasonable for a garden?

• 12

• 30

• 24

• 18

Emma read 15 pages of a book each day for 5 days. Write an expression to find out how many pages she read in total. How many pages did she read? Is this a reasonable amount for a week?

• 45 pages

• 75 pages

• 90 pages

• 60 pages

A box can hold 10 toys. If you have 3 boxes, write an expression to find out how many toys you can store. How many toys can you store? Is this a reasonable number for your collection?

• 15 toys

• 20 toys

• 25 toys

• 30 toys