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Number Sense Week 4

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  • What is 15 more than 10?
    25
  • What is the near doubles fact for 4 + 4 = 8 ?
    4 + 5 = 9 or 3 + 4 = 7
  • What number must you add to 15 to show the Identity Property?
    0 .. 15 + 0 = 15 or 0 + 15 = 15
  • What are the missing numbers? 31, 33, 35, ___, ___, 41, 43, 45
    37, 39
  • Show an example of the Commutative Property using the numbers 1, 2 and 3.
    1 + 2 = 3 2 + 1 = 3
  • What is the near doubles fact for 6 + 6 = 12 ?
    6 + 7 = 13 or 5 + 6 = 11
  • What are the missing numbers? 23, 26, 29, 32, ___, ___, 41, 44
    35, 38
  • Is this correct? 73 < 45
    No. 45 is less than 73.
  • Which numbers should I add first and why? 3 + 6 + 3 = 12
    3 + 3 because they are doubles.
  • What are the missing addends? ___ + 10 = 16 = 8 + ___
    6 ... 8
  • Change this addition fact into a subtraction fact: 4 + 5 = 9
    9 - 4 = 5 or 9 - 5 = 4
  • What is 15 less than 30?
    15
  • Is this correct? 94 > 66
    Yes. 94 is greater than 66.
  • Which numbers should I add first and why? 2 + 9 + 8 = 19
    2 + 8 because they make ten.
  • Change this addition fact into a subtraction fact: 8 + 6 = 14
    14 - 8 = 6 or 14 - 6 = 8
  • What are the missing addends? ___ + 4 = 10 = 3 + ___
    6 ... 7
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