Properties of addition web

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Properties of addition web

  1. 1. Properties of Addition
  2. 2. Bell Ringer • Determine the missing number… • 1) 75 + 12 = 80 + x • x = • 2) 101 – 49 = x • x = • 3) 289 + 0 = x + 289 • x =
  3. 3. Bell Ringer • Determine the missing number… • 1) 75 + 12 = 80 + x • x = 7 • 2) 101 – 49 = x • x = 52 • 3) 289 + 0 = x + 289 • x = 0
  4. 4. Where we were… • Adding Integers • Number Line, context, rules • Subtracting Integers • Number Line, context, Add the opposite and use rules for addition • Absolute Value • Additive Inverse
  5. 5. Where we are… • Students will learn to.. • Review the properties of addition and determine which property is in use. • Demonstrate their knowledge of adding and subtracting integers.
  6. 6. Commutative Property of Addition • Allows you to switch the order of addition problems without changing the sum. • 6 + 5 = 5 + 6 • 11 = 11
  7. 7. Associative Property • Changing the grouping of numbers in an addition problem does not change the sum. • (6 + 3) + 5 = 6 + (3 + 5) • 9 + 5 = 6 + 8 14 = 14
  8. 8. Identity Property of Addition • The sum of zero and any number will be that number. • 14 + 0 = 14 • 0 + 14 = 14
  9. 9. Exit Ticket – Power Write • In words, describe the Commutative Property of addition.

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