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Estimation Practice

Estimation Practice. Rounding Rules. Addition/Subtraction -Round to the biggest place of the smallest number Multiplication/Division -Round each number to it’s own biggest place. Remember: Never round single digit numbers Remember: Always round first. Now It’s Your Turn!!.

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Estimation Practice

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  1. Estimation Practice

  2. Rounding Rules • Addition/Subtraction-Round to the biggest place of the smallest number • Multiplication/Division-Round each number to it’s own biggest place. • Remember: Never round single digit numbers • Remember: Always round first

  3. Now It’s Your Turn!! • Work with a partner to complete estimation practice. Show all your work!!!!!!!  • Make sure to read the question at least 2 times. • What is the question asking me? • How will I solve it? • Always double check to see if your answer makes sense and answers the question!!!!

  4. A. 40 C. 25 B. 30 D. 20 Question 1A school has 36 classrooms and 776 students. On average, about how many students are in each classroom?

  5. A. 400 C. 700 B. 500 D. 600 Question 2There are 32 packs of gum in a box. Which is the best estimate for the number of packs in 18 boxes?

  6. A. Less than $365 C. Between $405 and $445 B. Between $365 and $405 D. More than $485 Question 3Mrs. David’s friend gave her 8 chairs. Mrs. David bought some varnish, the cost of which averaged $4.06 per chair, so she could improve the appearance of the chairs. She then sold all 8 chairs to another friend for $53.92 each. Which is the best estimate of the amount of profit Mrs. David made from this sale?

  7. A. 100 C. 80 B. 120 D. 200 Question 4A bag holds 1,996 small pieces of gum. Mrs. Walters has 21 students in her class and wants to divide the gum equally among them. Which is the best estimate for the number of pieces of gum each student will get?

  8. A. 150 lb C. 400 lb B. 300 lb D. 200 lb Question 5Each month, Paula’s dog eats a full bag of dog food that weighs 28 pounds. Which is the best estimate of the amount of dog food Paula’s dog eats in 1 year?

  9. A. 500 mi C. 400 mi B. 700 mi D. 800 mi Question 6The distance between San Antonio and Austin is about 79 miles. Mary drove from San Antonio to Austin and then back to San Antonio each day for 5 days. Which is the best estimate of the total distance she traveled during the 5 days?

  10. A. 200 marbles C. 160 marbles B. 300 marbles D. 80 marbles Question 7Steve and four of his friends bought a bag of 846 marbles. If they share the marbles equally, about how many will each friend get?

  11. A. $30 C. $40 B. $20 D. $10 Question 8Ribbon costs $1.99 per yard at a craft store. Melanie needs 21 yards of ribbon. Which is the best estimate for the cost of the ribbon Melanie will buy?

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