Sum

• -

• • +

A book has 10 pages I read 3. How many more pages do I have to read?

• 10-3=X

• 10+3=X

All together

• +

• -

The class has 7 students, only 3 came. How many students were absent.

• +

• -

How many left

• +

• -

There are 5 desks in the room. How many desk will we have in all if we receive 3 more?

• -

• +

I have 12 students but only have 6 glue sticks. What is the difference in the amount of glue sticks?

• -

• +

Alex has 9 apples and is given 3 more. How many apples does Alex have in all?

• 9 - 3 = X

• 9 + 3 = X

April has $15. She give $7 to her friend, how much does she have left?

• 15 + 7 = X

• 15 - 7 = X

Total

• +

• -