Lily has 4 apples. Her friend gives her 3 more apples. How many apples does Lily have now?
Start at 4 and count on 3. The answer is 7.
Start at 3 and count back 4. The answer is -1.
Start at 3 and count on 4. The answer is 7.
Start at 4 and count back 3. The answer is 1.

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