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Review: Rounding Numbers

Review: Rounding Numbers. Properties of Addition. Rounding. 684,826. If the number next door is 5 or more, we add 1 more. Round to the nearest thousand. hundred thousands. hundred millions. ten thousands. ten millions. hundreds. thousands. millions. tens. ones. 6,852. 7,000

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Review: Rounding Numbers

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  1. Review: Rounding Numbers Properties of Addition

  2. Rounding 684,826 If the number next door is 5 or more, we add 1 more. Round to the nearest thousand.

  3. hundred thousands hundred millions ten thousands ten millions hundreds thousands millions tens ones 6,852 • 7,000 • 6,800 • 6,000 • 6,900 Round to the nearest hundred.

  4. hundred thousands hundred millions ten thousands ten millions hundreds thousands millions tens ones 24,384 • 24,300 • 24,400 • 24,000 • 25,000 Round to the nearest thousand.

  5. hundred thousands hundred millions ten thousands ten millions hundreds thousands millions tens ones 45,842 • 45,000 • 40,000 • 50,000 • 45,800 Round to the greatest place.

  6. Properties of Addition • Commutative Property • Associative Property • Identity Property You can add two numbers in any order. Example: 12 + 25 = 25 + 12 You can change the grouping of addends. Example: 12 + (20 + 5) = (12 + 20) + 5 The sum of any number and 0 is that number. Example: 58 + 0 = 58

  7. Which property is represented by this problem? • Commutative Property b) Associative Property c)Identity Property 64 + 0 = 64

  8. Which property is represented by this problem? • Commutative Property b) Associative Property c)Identity Property 64 + 19 = 19 + 64

  9. Which property is represented by this problem? • Commutative Property b) Associative Property c)Identity Property 13 + (4 + 9) = (13 + 4) + 9

  10. Which property is represented by this problem? • Commutative Property b) Associative Property c)Identity Property 43 + 27 = 27 + 43

  11. Which property is represented by this problem? • Commutative Property b) Associative Property c)Identity Property 36 + 12 = 12 + 36

  12. Which property is represented by this problem? • Commutative Property b) Associative Property c)Identity Property 3 + (4 + 5) = (3 + 4) + 5

  13. Which property is represented by this problem? • Commutative Property b) Associative Property c)Identity Property A + 0 = A

  14. Which property is represented by this problem? • Commutative Property b) Associative Property c)Identity Property A + B = B + A

  15. Which property is represented by this problem? • Commutative Property b) Associative Property c)Identity Property A + (B + C) = (A + B) + C

  16. Use your knowledge of the properties of addition to find the missing numbers in this problem. 48 + 12 = ____ + 48 • 48 • 12 • 60 • 36

  17. Use your knowledge of the properties of addition to find the missing numbers in this problem. 95 + (5 + 115) = ( 95 + 5) + ___ • 95 • 5 • 115 • 215

  18. Use your knowledge of the properties of addition to find the missing numbers in this problem. 27 + ___ = 27 • 27 • 54 • 0 • 72

  19. Use your knowledge of the properties of addition to find the missing numbers in this problem. 63 + ____ = 56 + 63 • 63 • 65 • 56 • 36

  20. Use your knowledge of the properties of addition to find the missing numbers in this problem. ___ + 0 = 238 • 0 • 12 • 283 • 238

  21. Use your knowledge of the properties of addition to find the missing numbers in this problem. 16 + (15 + 26) = ( __ + 15) + 26 • 16 • 15 • 26 • 57

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