6 - 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

 6 - 2 = 3 + 11 = 5 + 10 = 7 + 4 = 9 + 6 = 11 - 4 = 9 - 4 = 16 - 6 = 12 - 8 = 12 - 10 =

# Combined operations

 3 +  6 + 4 = 3 - 1 - 2 = 2 + 1 - 3 = 3 - 2 + 1 = 1 + 5 - 5 = 6 + 11 + 8 = 11 - 9 + 9 = 8 - 7 + 11 = 11 + 8 - 9 = 11 + 8 + 10 =

# Problems

1. There were 5 books in the library of my house. For my birthday, I received 6 books.

How many books do I have now?

a) 30 books.

b) 1 book.

c) 11 books.

2. Paul has 3 trading cards and Pedro also has 3.

How many trading cards are there altogether?

a) 6 cards.

b) 4 cards.

c) 1 card.

3. I have 7 candies in my closet. I give 6 of them to my friends.

How many candies do I have left?

a) 13 candies.

b) 5 candies.

c) 1 candy.

4. Alfonso has a collection of stamps. In a store he bought 8 stamps and then he bought 11 in another store.

How many stamps does he have in total?

a) 19 stamps.

b) 21 stamps.

c) 3 stamps.

5. There are 4 people in a circus. 2 more people come in and then 4 people come out.

How many people are left in the circus?

a) 10 people.

b) 6 people.

c) 2 people.

6. There are 6 children in a movie theater. 4 of them come out and then 4 children come in.

How many children are there at the end of the movie?

a) 14 children.

b) 6 children.

c) 8 children.

7. Pilar has 4 marbles, Juana has 3 and Amparo 6.

How many marbles are there altogether?

a) 7 marbles.

b) 13 marbles.

c) 9 marbles.

8. In a circus there were 8 elephants, 9 tigers and 6 monkeys.

How many animals were there in the circus?

a) 17 animals.

b) 15 animals.

c) 23 animals.

9. José Luis had 9 euros and his father gave him 6. He bought a book that cost 11 euros.

How much money does he have now?

a) 5 Euros.

b) 4 Euros.

c) 26 Euros.

10. 7 soldiers travel in a military plane. At the airport, 8 people go aboard and 7 go down.

How many soldiers are there in the plane?

a) 22 soldiers.

b) 8 soldiers.

c) 7 soldiers.

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®Arturo Ramo García.-Record of intellectual property of Teruel (Spain) No 141, of 29-IX-1999
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