Unit 4 L1&3 Progress Check

Use basic facts and patterns to find the product or the problem below.

70 x 10 = ?

• 70

• 700

• 70,000

• 7,000

Find the missing factor. Enter your answer in the box.

40 × _____ = 2,800

Tags

CCSS.2.OA.C.3

A library has 40 shelves. Each shelf has 50 books. Write and solve an equation to find the total
number of books on the shelves.

• 40 + 50 = b

  b = 90

• 40 × 50 = b

  b = 200

• 40 × 50 = b

  b = 2,000

• 40 × 50 = b

  b = 20,000

When you multiply 20 × 50, how many zeros are in the product?

• five

• two

• four

• three

Select all the expressions that have a product of 36,000.

• 40 × 900

• 
  600 × 60

• 
  90 × 40

• 40 × 600

• 90 × 400

The dentist ordered 10 boxes of toothbrushes. There are 15 toothbrushes in each box.
How many toothbrushes did the dentist order? Use the array to help.

• 25 toothbrushes

• 150 toothbrushes

• 1,500 toothbrushes

• 100 toothbrushes

Tags

CCSS.2.OA.C.4

Find 70 × 23. Enter your answer in the box.

Which is the product of 34 × 60?

• 24

• 204

• 2,040

• 20,400