13 - 2



Tables of addition

- - - - - - - - - -

Tables of subtraction

- - - - - - - - - -


Simple operations

Combined operations

Problems

Aritmetic tables

Instructions: Press one of the buttons on the right column The correct number is put in red .

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.

Simple operations

13 - 2 =

3 + 7 =

5 + 6 =

7 + 5 =

9 + 9 =

11 + 5 =

8 - 4 =

12 - 6 =

19 - 8 =

18 - 10 =


Combined operations

4 + 1 - 4 =

6 + 5 - 1 =

3 - 2 - 0 =

6 + 2 + 4 =

3 + 4 - 1 =

11 + 9 + 7 =

9 + 9 - 9 =

10 - 6 + 10 =

11 - 7 + 10 =

6 + 7 -11 =






Problems


1. José has 5 trading cards and Tomás has 4.

How many trading cards are there altogether?

a) 1 card.

b) 6 cards.

c) 9 cards.

 


2. Julian is 4 years old and his brother is 2 years younger.

How old is the brother?

a) 6 years.

b) 2 years.

c) 5 years.

 


3. Mary has a collection of stamps. In a store she bought 9 stamps and then she bought 9 in another store.

How many stamps does she have altogether?

a) 16 stamps.

b) 14 stamps.

c) 18 stamps.

 


4. There were 8 rabbits in a farm and 5 of them died because of an epidemic.

How many rabbits are left in the farm?

a) 13 rabbits.

b) 3 rabbits.

c) 4 rabbits.

 


5. A gardener planted 6 trees in a corner of the garden and then 3 trees in another corner. At the end, 6 trees died.

How many trees are left in the garden?

a) 15 trees.

b) 2 trees.

c) 3 trees.

 


6. When I went out to the recess, I had 4 marbles. I won 3 marbles in the game and then I lost 3.

How many marbles do I have at the end of the recess?

a) 4 marbles.

b) 6 marbles.

c) 10 marbles.

 


7. There are 2 people in a movie theater. 3 people come in and then 4 come out.

How many people are left in the movie theater?

a) 2 people.

b) 9 people.

c) 1 people.

 


8. To make an installation, we bought 13 meters of cable. First, we used 9 meters and then 2.

How many meters of cable are left?

a) 2 meters.

b) 3 meters.

c) 24 meters.

 


9. 10 people travel in a bus. If 6 of them get down and then 11 people get in

How many people are there in the bus?

a) 14 people.

b) 27 people.

c) 15 people.

 


10. In a circus there were 7 elephants, 9 tigers and 11 monkeys.

How many animals were there in the circus?

a) 20 animals.

b) 16 animals.

c) 27 animals.



 

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®Arturo Ramo García.-Record of intellectual property of Teruel (Spain) No 141, of 29-IX-1999
Plaza Playa de Aro, 3, 1º DO 44002-TERUEL