Add or Subtract? x + 5 7 =.

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Presentation transcript:

Add or Subtract? x + 5 7 =

Subtract x + 5 7 = – 5 – 5 x = 2

Check x + 5 7 = 7 5 = 2 + 7 7 =

Add or Subtract? y 8 16 + =

Subtract y 8 16 + = – 8 – 8 y = 8

Check 8 + y 16 = 16 8 = 8 + 16 16 =

Add or Subtract? y + 7 – 2 =

Subtract y + 7 – 2 = – 7 – 7 y – 9 =

Check y + 7 – 2 = – 9 + 7 – 2 = – 2 – 2 =

Add or Subtract? x – 5 14 =

Add x – 5 14 = + 5 + 5 19 x =

Check – x 5 = 14 5 19 = 14 – 14 14 =

Add or Subtract? y – 8 12 + =

Add y – 8 12 + = + 8 + 8 y = 20

Check y – 8 12 + = – 12 + 20 = 8 12 12 =

Add or Subtract? m – 9 – 4 =

Add m – 9 – 4 = + 9 + 9 5 m =

Check m – 9 – 4 = – 9 – 4 5 = – 4 – 4 =