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Add/subtract 4

Look at these fact families and see if you can work out what the missing number is. Work with a friend.

 ♦ Read aloud each of these fact equations.

 ♦ Decide what number is needed in each of the equations to complete the fact.

 ♦ When you know what the number is, write out each of the equations on a piece of paper. When you have answered all of the questions select the buttons next to the each question to see if you are right.

2+1=?

3

1+2=?

3

3–2=?

1

3–1=?

2

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