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Name:_______________________ Teacher:______________ UNIT 3-DIVISION STUDY GUIDE Test date: ________________ Study Guide Due: ______________ What I need to know: 1. Divide three digits by one digit and three digits by two digits 2. Find factors of numbers 3. Identify the greatest common factor 4. Find the median and mean of a group of data 5. Identify and solve numbers/problems about prime and composite 6. Use all operations to show and solve math problems as an expression or number sentence. 7. Use strategies to estimate quotients of whole numbers using metal strategies 8. Use division to identify rates (ratios) 9. Divide by a multiple of 10 10.Understand how to express ratios in different ways 11. Model and describe rates of change How I can study: 1. Pay attention in class and ask questions! If you don’t understand ask for extra help. 2. Do the Student Workbook pages that align with this topic. Student Book pages: 29-49, 172-183, and 280-283. 3. Do the Study Island Assignments (Model Division, Division, and Real World Problems.) Practice Problems: SOLVE: 1. 364 ÷2 2. 198 ÷ 22 3. List all the factors of 40 and 22. What is the greatest common factor of 40 and 22? ______ 4. Look at the number 345. Answer yes or no to each question Is it divisible by 2? ____ How do you know? _____________________________________ Is it divisible by 3? ____ How do you know? _____________________________________ Is it divisible by 5? ____ How do you know? _____________________________________ Is it divisible by 6? ____ How do you know? _____________________________________ Is it divisible by 10? ____ How do you know? ______________________________________ 5. Julie’s scores for her first 5 math test are: 88, 56, 96, 74 , 99 a. What is the median of Julie’s scores? b. What is Julie’s average of her tests? 6. Write the following: a. A prime number between 20 and 25 ________ b. Find a composite that is less than 90 ________ 7. Use as many different operations as you can to create expressions that equal the number 56 56 8. Use as many different operations as you can to create number sentences that use the number 21 in the problem. 21 9. Estimate the answers to the following problems. Then, use any method to solve them. Be sure to show your work! If Jordan got paid $495 dollars for working 15 hours, how much money per hour did Jordan make? Write your problem in a number sentence _______________________ Estimate: ____________ ÷ ____________ = ______________ 10. Divide to find the quotients- use mental math to solve. 7,200 ÷ 60 3,200 ÷ 8 11. Which of the following is the best buy? Show your work below! 3-pack of tomatoes for $1.68 6-pack of tomatoes for $2.64 12-pack of tomatoes for $5.76 Which one is the best for a unit cost? ________________ Sport Basketball Football Baseball Swimming Tennis Soccer Total Favorite Sports Number of People Who Like That Sport 12 6 5 3 3 1 30 Example: Write all the ways you can write a ratio for the number of people who prefer basketball to tennis: Basketball to Tennis – 12 to 3 Basketball : Tennis – 12 : 3 Basketball / Tennis – 12 / 3 12. Use the chart to write the different ways ratios can be expressed. Write all the ways you can write a ratio for the number of people who prefer soccer to baseball. 13. What ratio would you write to show the number of students who chose swimming to the total number of students?
