Unit 1 pre-assessment

Complete the chart.

Write a prime number in the space below and tell how you know it is prime.

Write a composite number in the space below and tell how you know it is composite.

The equation 5 × 7 = 35 can mean:

• 35 rulers are 5 rulers and 7 rulers put together

• 35 pencils are 7 times as many as the 5 pencils at the green table

• 35 markers are 5 markers less than 7 markers

• 5 erasers split into 7 groups is 35 erasers

Fill in the bubbles beside the two equations that best represent this situation: Marcus has 15 toy cars. That is 3 times as many as his brother Craig has. How many toy cars does Craig have? (In the equations below, c stands for Craig’s toy cars.)

• 15 = 3 × c

• 15 × 3 = c

• 15 - 3 = c

• 15 ÷ c = 3

Fill in the blanks to complete the ratio table.

Write and solve a multiplication equation for each of these problems. Eric is 11 years old. Eric’s dad is 3 times older than Eric. How old is Eric’s dad?

Write and solve a multiplication equation for each of these problems. Amber bought a pair of pants and a pair of shoes. The shoes cost 3 times as much as the pants. The pants cost $15. How much did the shoes cost?

Write and solve a multiplication equation for each of these problems. Jamal bought a book and a CD. The book cost $14. The CD cost $7. How many times more than the CD did the book cost?

Find and write in the missing dimension on each of the rectangles below.