Operasi bilangan bulat matematika

1. SITI NUR FATIMAH
(A410112003)
NUMBER

2. NUMBER
Bilangan Cacah
Negative integer Number Zero Positive Integer Number
—·—·—·—·—·—·—·—·—·—·—·—·—·—·—·— -7 -6 -5 - 4 -3 -2 -1 0 1 2 3 4 5 6 7

3. Summation and Reduction Two Integer
number line model approach (Model garis bilangan) :
1 Forward-Backward
2. Arrows 1
3. Arrows 2

4. Summation and Reduction Two Integer?
(Approach models the number line Forward and Backward)
Integer
Number
positive Þ Advance
nol Þ Fixed
negatif Þ go back
Operation
+ Þ Next
- Þ Reserve direction

5. Calculate 2 + 3
2
-5 -4 -3 -2 -1 0 1 2 3 4 5
3
So, 2 + 3 = 5

6. Calculate 2 + (–3)
2
-5 -4 -3 -2 -1 0 1 2 3 4 5
– 3
So, 2 + (–3) = –1

7. Calculate –2 + 3
-2
-5 -4 -3 -2 -1 0 1 2 3 4 5
3
So, – 2 + 3 = 1

8. Calculate –2 + (– 3)
-2
-5 -4 -3 -2 -1 0 1 2 3 4 5
– 3
So, – 2 + (– 3) = – 5

9. Calculate 2 – 3
2
-5 -4 -3 -2 -1 0 1 2 3 4 5
3
Soi, 2 – 3 = –1

10. Calculate 2 – (–3)
2
-5 -4 -3 -2 -1 0 1 2 3 4 5
3
Jadi, 2 – (– 3 ) = 5

11. Summation and reduction Two Intefer?
Approach Models the Number Line Arrows-1
Integer
number
positive Þ Direction to the right
ZeroÞ Fixed
negative Þ Direction to the left
Operation
+ Þ Continued
- Þ Converted to add to operation
Operation Value
Judging from the base point 1 to
arrowhead-2 (see below number
arrowhead)

12. Calculate 2 + 3
-5 -4 -3 -2 -1 0 1 2 3 4 5
So, 2 + 3 = 5

13. Calculate -2 + 3
-5 -4 -3 -2 -1 0 1 2 3 4 5
So, -2 + 3 = 1

14. Calculate 2 - 3
Calculate 2 +
(-3)
-5 -4 -3 -2 -1 0 1 2 3 4 5
So, 2 - 3 = -1

15. Summation and Reduction two integers
(Approach models the number linae arrows-2)
The Approach Uses a Number line Agreement That:
The operation is used addition operation.If you found a
reduction in the technical operation should be converted
first into a summation operation with the opponent.Means
the summation operation is continued.

16. The first term is the first point is placed on the number line (as a
starting point an arrow) then just continued with the second term
in accordance with the type of number is. If the second term
positive numbers, draw an arrow to the right as far as the amount
of his number. If the second term negative numbers, draw an
arrow to the left as far as the amount of his number.

17. Calculate 2 + 3
-5 -4 -3 -2 -1 0 1 2 3 4 5
By Adi Wijaya
So, 2 + 3 = 5

18. Calculate -2 + 3
-5 -4 -3 -2 -1 0 1 2 3 4 5
By Adi Wijaya
So, -2 + 3 = 1

19. Calculate 2 - 3
Calculate 2 +
(-3)
-5 -4 -3 -2 -1 0 1 2 3 4 5
So, 2 - 3 = -1

20. THANK YOU