7 - 3

 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

 7 - 3 = 4 + 10 = 6 + 3 = 8 + 11 = 10 + 2 = 2 + 11 = 11 - 5 = 17 - 7 = 20 - 9 = 21 - 11 =

# Combined operations

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

# Problems

1. One day Santiago received 20 cents and another day he received 60 cents.

How much money did he receive in the two days?

a) 80 cents.

b) 40 cents.

c) 60 cents.

2. Andrew fished 5 fishes and then he threw 3 of them to the river because they were small.

How many fishes does he have left?

a) 8 fishes.

b) 2 fishes.

c) 4 fishes.

3. My cousin is 9 years old.

How old will he be in 11 years?

a) 20 years.

b) 2 years.

c) 14 years.

4. Isabel collects stamps. One day she bought 11. If she give 10 stamps to her friend Jane,

How many stamps does she have left?

a) 21 stamps.

b) 1 stamp.

c) 12 stamps.

5. There were 9 cookies in a box. First I ate 2 cookies and then 2.

6. Petra had 6 books on her bookcase. She received 3 in her birthday and she lent 4 to her friend.

How many books does she have now?

a) 13 books.

b) 8 books.

c) 5 books.

7. There were 9 canaries in a cage. I sold 2 of them and 1 escaped.

How many canaries do I have now?

a) 4 canaries.

b) 14 canaries.

c) 6 canaries.

8. Pilar has 6 euros. Her mother gives her 7 and she spent 8 euros on school supplies.

How much money does she have left?

a) 5 Euros.

b) 21 Euros.

c) 6 Euros.

9. A school bus transports 11 children. At the first stop, 6 children get down and then 8 new children get in.

How many children are there in the bus?

a) 25 children.

b) 12 children.

c) 13 children.

10. My mom has spent 11 euros in apples, 10 euros in bananas and 10 euros in oranges.

How much money did she spend?

a) 31 Euros.

b) 20 Euros.

c) 21 Euros.