Study

Addition and subtraction to 20

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  • 19-12
    7
  • What is this shape?
    Cone
  • What is this shape?
    Cylinder
  • What is this shape?
    Sphere
  • What is this shape?
    Sphere
  • 21-6
    15
  • What is this shape?
    Pyramid
  • 8+9
    17
  • 17-6
    11
  • 20-7
    13
  • 10+9+1
    20
  • 10+7
    17
  • 20-14
    6
  • 16-8
    8
  • What is this shape?
    Cube
  • 18-7
    11
  • 6+9
    15
  • 15-5+2
    12
  • 9+4
    13
  • What is this shape?
    Pyramid
  • 19-14
    5
  • What is this shape?
    Pyramid
  • 20-18
    2
  • 3+7+8
    18
  • 10+7+3
    20
  • 20-10
    10
  • 15+6
    21
  • 7+7
    14