This document provides an introduction to basic addition concepts including: 1. Counting numbers from 1 to 10 and their symbols. 2. Defining addition as bringing together numbers or quantities to find a total. Common addition symbols and models like number lines are introduced. 3. Explaining strategies for adding whole numbers like using pictures, counting up from a number, and "jumping" on a number line. Alternative models like a bunny hopping on a number line are shown. 4. Demonstrating the process of adding multi-digit numbers by carrying amounts to the next column. 5. Defining related addition terms like sum, addends, and providing an example word problem.

1. Basic Addition
By: Shannen Alliah M. Edmilao & Danielle Lauron

2. Counting
One 1
Two 2
Three 3
Four 4
Five 5

3. Six
Seven
Eight
Nine
Ten

4. Addition
Addition is…
…bringing two or more numbers (or things) together to make a new total.
Here a 1 flower is added by another 1 flower
Which makes 2 flowers.
In word it is “one plus one
equals two.”
1 + 1 = 2
+ =

5. Whole Numbers
Addition
• Number Line- show numerals in order of the value.
0 1 2 3 4 5 6
• Adding on the number line. (2+3=5)
0 1 2 3 4 5 6
2 + 3 = 6

6. Whole Numbers
• Adding with Pictures
+ =

7. Addition of Whole Numbers
Set Model
To find “2+3”, one with two object and the other with three
object, from their union, and count the total

8. Measurement Model
In this model, the addition is performed on a number line.
For example, to calculate 3+4.
1.) draw an arrow with length 3 starting at 0.
2.) draw an arrow with length 4 starting from the end of the previous arrow.
3.) the sum is then the length of the two arrows combined together this way.
0 1 2 3 4 5 6 7 8 9

9. Count From A Number Upwards
Example: 6+3
Think “6…7,8,9”
Jump Strategy
You can also count by 2s or 10s, or make any “jumps” you want to help
you to solve a calculation.
Example: 4+12
Think “4…14,15,16”
1 2 3 4 5 6 7 8 9 10
4 5 6 7 8 9 10 11 12 13 14 15 16

10. Alternative number line model for addition
In this model, a bunny is sitting above the number 0 (which is the home base)
facing right (which is the positive direction), and will jump forward if it has to
perform an addition problem.
1 2 3 4 5 6 7

11. Example : 2 + 4
1. Our rabbit starts at 0 facing right.
2. It then hops forward 2 units because it sees 2 in the beginning.
0 1 2 3 4 5 6 7

12. Example : 2 + 4
1. Our rabbit starts at 0 facing right.
2. It then hops forward 2 units because it sees 2 in the beginning.
0 1 2 3 4 5 6 7

13. Example : 2 + 4
1. Our rabbit starts at 0 facing right.
2. It then hops forward 2 units because it sees 2 in the beginning.
0 1 2 3 4 5 6 7

14. Example : 2 + 4
1. Our rabbit starts at 0 facing right.
2. It then hops forward 2 units because it sees 2 in the beginning.
0 1 2 3 4 5 6 7

15. Example : 2 + 4
1. Our rabbit starts at 0 facing right.
2. It then hops forward 2 units because it sees 2 in the beginning.
0 1 2 3 4 5 6 7

16. Example : 2 + 4
1. Our rabbit starts at 0 facing right.
2. It then hops forward 2 units because it sees 2 in the beginning.
0 1 2 3 4 5 6 7

17. Example : 2 + 4
1. Our rabbit starts at 0 facing right.
2. It then hops forward 2 units because it sees 2 in the beginning.
0 1 2 3 4 5 6 7

18. Names
Other names for Addition are:
• Sum
• Plus
• Increase
• Total
And the numbers to be added together are called the “Addends”:
8+3=11
Addend
Addend
Sum

19. Adding numbers with two digits
• Adding numbers with 1 digit is pretty straight forward.
• In general, you can do it mentally or use your fingers.
• Adding zero to a number never changes the number.
For Addition
Step 1: Add the one’s place number and take the carry to the next step.
Step 2: Add the ten’s place number and also add the carry and over the new
carry to the next step. Continue this process for every place in the given
number.

20. Handy Rules of Addition:
a.) add the following column. If this column contains only one digit, we just write
that digit under the column we are adding.
b.) we need to go on to the next column and repeat the same procedure.
Above, we add the ones column first. Then, we carry over the tens to the tenth column. The 1 that we carry
over has place value of 10. However, there is no need to write 10 because we saw before in place value
putting a 1 here in the tens place means that there is ten.
1
3 6
+1 7
---------------
5 3
6+7=13
1
5 6
+ 4 6
----------------
104
8+6=14

21. A man sold 230 pineapple at a fruit stand in the
morning. He sold another 86 balloons in the evening.
a.) How many balloons did he sell in all?
230 86
Morning Afternoon
?

22. A man sold 230 pineapple at a fruit stand in the morning. He sold another 86 pineapple
in the evening. How many did he sell at all?
Hundreds Tens Ones
3 1 6