3 + 1 
Name: ______________________________________ Subject: _______________________ Date: _______
Write on the
right side what is missing.
In the combined operations, you must do the first operation with the first two numbers. Then, you must do the second operation with the result and the third number.
3 + 1 = 

5 + 5 = 

7 + 6 = 

9 + 4 = 

11 + 6 = 

4  2 = 

13  4 = 

11  6 = 

10  8 = 

17  10 = 
5  3  1 = 

1 + 3  1 = 

3  1 + 2 = 

6 + 2  5 = 

5 + 2 + 3 = 

11  10 + 6 = 

10 + 7  11 = 

6 + 7 + 6 = 

8 + 10  11 = 

11  8 + 8 = 
1. Antonio has 3 trading cards and Juan Gaspar has 4.
How many cards are there altogether?
a) 1 card.
b) 8 cards.
c) 7 cards.
2. Santiago is 6 years old and his brother is 5 years younger.
How old is his brother?
a) 11 years.
b) 1 year.
c) 4 years.
3. Jesus has a stamp collection. He bought 11 stamps in a store and then, he bought 8 stamps in another store.
How many stamps does he have altogether?
a) 3 stamps.
b) 12 stamps.
c) 19 stamps.
4. There are 8 rabbits in a farm. 6 of them died because of an epidemic.
How many rabbits are left in the farm?
a) 14 rabbits.
b) 2 rabbits.
c) 10 rabbits.
5. A gardener planted 4 trees in a corner of the garden and then 4 trees in another corner. At the end, 3 trees died.
How many trees are left in the garden?
a) 11 trees.
b) 2 trees.
c) 5 trees.
6. When I went out to the recess, I had 4 marbles. I won 5 marbles in a game and then I lost 6.
How many marbles do I have at the end of the recess?
a) 3 marbles.
b) 5 marbles.
c) 15 marbles.
7. There are 5 people in a movie theater. 4 people come in and 4 people come out.
How many people are left in the movie theater?
a) 3 people.
b) 13 people.
c) 5 people.
8. To make an installation, we bought 11 meters of cable. First, we used 7 and then 2 meters.
How many meters of cable are left?
a) 2 meters.
b) 20 meters.
c) 18 meters.
9. 8 people travel in a bus. If 6 of them get down and then 9 people get in.
How many people are left in the bus?
a) 23 people.
b) 10 people.
c) 11 people.
10. In a circus there were 8 elephants, 11 tigers and 7 monkeys.
How many animals were there in the circus?
a) 19 animals.
b) 18 animals.
c) 26 animals.
 Educational
applications  Calculation 
In Spanish  Interactive
®Arturo Ramo García.Record of intellectual property of Teruel (Spain)
No 141, of 29IX1999
Plaza Playa de Aro, 3, 1º DO 44002TERUEL