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Estimating With Whole Numbers

Estimating With Whole Numbers. 1-1 Pages 6-9. Warm Up Problems. 3,214 + 5,490 9,225 + 8,652 3,210+ 1,200 8,774 + 2,156. 8,704 17,877 4,410 10,930. Definitions. Estimate : Is close to the exact number but not exact.

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Estimating With Whole Numbers

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  1. Estimating With Whole Numbers 1-1 Pages 6-9

  2. Warm Up Problems 3,214 + 5,490 9,225 + 8,652 3,210+ 1,200 8,774 + 2,156 8,704 17,877 4,410 10,930

  3. Definitions Estimate: Is close to the exact number but not exact. Overestimate: is a number that is LESS THAN the exact number Underestimate: is a number that is MORE THAN the exact number

  4. Problem Starter Mrs. Crawford is trying to plan a party for all entire 6th grade at Green Acers. The 1st. Class has 22 students, the 2nd. class has 25 students , and the third class has 23 students. Estimate how many cups she will need to buy for the party. Would it be better to overestimate, or underestimate in this situation? Why?

  5. When estimating, we sometimes round to a PLACE VALUE. Estimate the Sum, or difference by rounding to the place value indicated. 4, 6 8 9 +2, 4 6 9

  6. When estimating, we sometimes round to a PLACE VALUE. Estimate the Sum, or difference by rounding to the place value indicated. 5 0, 4 98 -3 5, 7 9 8

  7. When estimating, we sometimes round to a PLACE VALUE. Estimate the Sum, or difference by rounding to the place value indicated. #6. 6, 5 7 0 Thousand + 3, 6 0 9

  8. When estimating, we sometimes round to a PLACE VALUE. Estimate the Sum, or difference by rounding to the place value indicated. #7. 49, 8 2 1 Ten Thousand -1 1, 5 6 7

  9. Solve Problems #8 and #9 with your partner, then share your answers. ______________

  10. # 10. The recreation center has provided softballs every year to the city league. Use the table to estimate the number of softballs the league will use in 5 years? What is this problem about? What operation are we using? What numbers are we using?

  11. # 12. Solve The recreation center loses 4 table tennis balls every year. Estimate how many years will it take until the center has no balls left? What is this problem about? What operation are we using? What numbers are we using?

  12. # 11. Solve The recreation center has a girls golf team with 8 members. How many golf balls will each girl on the team get? What is this problem about? What operation are we using? What numbers are we using?

  13. Homework • Page 8-9 1-28 • 1-2 Finished Together • 3-5 • 6-12 Finished Together • 13-28

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