Chapter 3 Review

How would you solve 40 X 50 using mental math?

Mrs. Traynor's class is taking a field trip to the zoo. The trip will cost $26 for each student. There are 22 students in the class. Round each factor to estimate the total cost of the students' field trip. Show your factors and product in and equation (a X b = c)

Mrs. Traynor's class is taking a field trip to the zoo. The trip will cost $26 for each student. There are 22 students in the class. Use compatible numbers to estimate the total cost of the field trip. Show the factors and products in an equation (a X b = c)

Find the product of 35 X 10

Find the product of 19 X 20

Find the product of 12 x 100

Find the product of 70 X 100

Find the Product of 28 X 30

There are 23 boxes of pencils in Mr. Shaw's supply cabinet. Each box contains 100 pencils. How many pencils are in the supply cabinet?

Which would provide a reasonable estimate for 23 X 38?

• 50 X 20

• 25 X 40

• 30 X 30