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  • Mrs. Byrne has 2,467 fiction books and 1,298 nonfiction books. About how many books does Mrs. Byrne have altogether?
    Mrs. Byrne has about 3,000 books!
  • What is the partial sum for the hundreds place? 5,683 + 2,375
    600 + 300 = 900
  • Add. 7,892 + 5,278 =
    13,170
  • Front End Estimate: 3,789 + 8,609 =
    3,000 + 8,000 = 11,000
  • Estimate: 6,457 + 3,452 =
    6,000 + 3,000 = 9,000
  • Round to the nearest ten: 2,821
    2,820
  • What is the partial sum for the tens place? 5,683 + 2,375
    80 + 70 = 150
  • Round to the nearest hundred: 6,782
    6,800
  • Add. 567,892 + 253,719 =
    821,611
  • Add. 9,234 + 287 =
    9,521
  • What is the partial sum for the ones place? 5,683 + 2,375
    3 + 5 = 8
  • What is the partial sum for the thousands place? 5,683 + 2,375
    5,000 + 2,000 = 7,000
  • Estimate: 22,235 - 9,782 =
    20,000 - 10,000 = 8,000
  • Estimate. 567 + 432
    1000
  • Round to the nearest thousand. 234,678
    235,000
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