practice adding , subtracting 2digit numbers

Add

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Add

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subtract

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Add

3 +1 +2

• 5

• 6

• 4

Add

5 + 5 + 2

• 12

• 10

• 7

complete the fact families

( 2 , 8 ,10 )

2 + 8 =10

8 + 2 = 10

• 10 - 8 = 2

  10 - 2 = 8

• 8 - 10 =2

  2 - 10 = 8

• 10 - 8 = 8

  10 -2 = 2

complete the fact families

( 3 , 4 , 7 )

7 - 3 = 4

7 - 4 = 3

• 3 + 4 = 7

  4 + 3 = 7

• 3 + 7 = 4

  4 + 7 = 3

• 3 + 4 = 4

  4 + 3 = 3