Subtraction

1
Subtraction
2
Sign
It is read as
3
Now, take two triangles away
How many triangles left?
There are 3 triangles left!
4
Now, we can say that
-

3
5
2

-
5
Another example


2
3
5
Take 2 balls away.
6
Lets try it in another way
Lets try it in another way
7
8
5

5
Put the smallest number in your mind.
Count to the biggest number.
After 5!
6
7
8
Count how many fingers?
3
3
There are !
8
Story Problems
9
8
8
She lost
Balls.
Hanaa has
3
3
of them.
with her?
How many balls
remain
remain
The answer is

5
10
7
marbles.
7
Youssef had
5
5
fell into a hole.
left
left
How many marbles are with Youssef?
The answer is
2

11
When you find these words

• Left
• Remain
• Difference
• You will subtract
• You will use the subtraction sign
• ( )