3 + 4

 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

 3 + 4 = 5 + 9 = 7 + 3 = 9 + 2 = 11 + 3 = 9 - 2 = 15 - 4 = 15 - 6 = 15 - 8 = 13 - 10 =

# Combined operations

 6 +  6 - 3 = 6 - 1 - 2 = 6 - 3 +1 = 6 + 4 - 1 = 4 + 4 + 1 = 11 + 11 + 8 = 9 + 9 - 10 = 12 - 11 + 10 = 7 + 9 - 8 = 6 + 10 + 10 =

# Problems

1. Amado 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.

2. Josefina had 6 chocolates and she ate 2 in the morning.

How many chocolates does she have now?

a) 8 chocolates.

b) 1 chocolate.

c) 4 chocolates.

3. There were 10 rabbits in a farm and 7 rabbits died because of an epidemic.

How many rabbits are left on the farm?

a) 17 rabbits.

b) 3 rabbits.

c) 12 rabbits.

4. I had 9 marbles and I lost 6 of them when I was playing.

How many marbles do I have now?

a) 15 marbles.

b) 8 marbles.

c) 3 marbles.

5. There were 6 planes on the runway. 2 of them depart and then 4 more planes arrive.

How many planes are there on the runway?

a) 12 planes.

b) 8 planes.

c) 6 planes.

6. Pilar has 2 CDs at home, Carmen has 2 and Soledad 3.

How many CDs are there altogether?

a) 7 CDs.

b) 8 CDs.

c) 9 CDs.

7. A gardener planted 5 trees in a corner of the garden and then 6 in another corner. At the end, 2 trees died.

How many trees are there in the garden?

a) 13 trees.

b) 10 trees.

c) 9 trees.

8. José Ramón has 11 euros in his pocket. He Spent 10 euros in candies and 1 in seed bags.

How much money does he have left?

a) 22 Euros.

b) 0 Euro.

c) 13 Euros.

9. Mr. Esteban had 4 CDs in his store, he brought 6 CDs from the storehouse and sold 7.

How many CDs are left in the store?

a) 3 CDs.

b) 4 CDs.

c) 17 CDs.

10. To make an installation, we buy 13 meters of cable. First, we used 5 and then 3 meters.

How many meters of cable are left?

a) 6 meters.

b) 21 meters.

c) 5 meters.