Podcast
Questions and Answers
Don works 18 hours a week. Which expression shows a good way to use rounding to estimate how many hours Don will work in 52 weeks?
Don works 18 hours a week. Which expression shows a good way to use rounding to estimate how many hours Don will work in 52 weeks?
Find the product 21 × 40. Show your work.
Find the product 21 × 40. Show your work.
840
The product of two factors is 2,000. One of the factors is 50. What is the other factor?
The product of two factors is 2,000. One of the factors is 50. What is the other factor?
Select all the expressions that are equal to 260.
Select all the expressions that are equal to 260.
Signup and view all the answers
A florist makes centerpieces. He puts 18 roses in each centerpiece. Which is the best way to use compatible numbers to estimate the number of roses the florist needs for 24 centerpieces? What is the exact number of roses?
A florist makes centerpieces. He puts 18 roses in each centerpiece. Which is the best way to use compatible numbers to estimate the number of roses the florist needs for 24 centerpieces? What is the exact number of roses?
Signup and view all the answers
Margo hiked 12 miles 13 times last month. She hiked 14 miles 12 times this month. Draw arrays or area models to find the number of miles Margo hiked during the past two months. Write and solve equations to represent your arrays or area models.
Margo hiked 12 miles 13 times last month. She hiked 14 miles 12 times this month. Draw arrays or area models to find the number of miles Margo hiked during the past two months. Write and solve equations to represent your arrays or area models.
Signup and view all the answers
Study Notes
Problem Solving with Multiplication and Estimation
-
Don works 18 hours a week. To estimate how many hours he works in 52 weeks, round 18 to 20 and 52 to 50. The expression to estimate is 20 x 50.
-
To find the product of 21 x 40, multiply 21 x 40 = 840
-
The product of two factors is 2000. One factor is 50. To find the other factor, divide 2000 by 50 = 40.
-
Expressions equal to 260 are 13 x 20, 10 x 20 + 3 x 20, 20 x 10 + 3 x 10.
Centerpiece Roses
- A florist puts 18 roses in each centerpiece. To estimate the number of roses needed for 24 centerpieces, use compatible numbers. Round 18 to 20, and 24 to 25. The estimate is 20 x 25 = 500. The exact number of roses for 24 centerpieces is 18 x 24 = 432.
Margo's Hiking
- Margo hiked 12 miles 13 times last month. She hiked 14 miles 12 times this month. To find the total miles she hiked use arrays or area models to find the total miles: 12 x 13 + 14 x 12 = 156 + 168 = 324
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Test your skills in multiplication and estimation with real-world scenarios involving work hours, floral arrangements, and hiking distances. You'll tackle problems that require rounding and estimating products, as well as calculating exact totals. Perfect for enhancing your math proficiency!
