Division of Integers

1. MULTIPLICATI
ON OF
INTEGERS
ERWIN M. ROMBAOA

2. ASSIGNMENT
2
Subtract the
following
integers.
1. 16 - 12 =
2. 19 – (-7) =
3. (−21) − (−5) =
6. 11 – (-5) =
7. 19 - 23 =
8. -6 - 5 =
9. (-3) – (-4) =
10. (-10) – (12) =
-
1
6
2
6
4
4
-
1
6
-
4
-
111
-

3. MUltiplication
•We learned that with whole
numbers, multiplication is
repeated addition. For
example, 4 x 3, means three
9/19/2022 Multiplication of Integers 3

4. MUltiplication
4 × 3 =
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4 + 4 + 4 = 1
1 2 3

5. MUltiplication
12 × 4 =
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12 + 12 + 12 + 12 = 4
1 2 3 4

6. MUltiplication
9 X 6
6
9+9+9+9+ 5
1 2 3 4 5 6

7. Multiplication
9 X 6
7
9+9+9+9+5
1 2 3 4 5 6
Multiplic
and
multiplie
r
PRODU

8. RULES in Multiplying
Integers
1. When you multiply two
numbers with the same signs,
the product is positive.
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(+)(+)=
(-)(-)=+

9. RULES in Multiplying
Integers
1. When you multiply two
numbers with the same signs,
the product is positive.
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(5)(2)= (-2)(-

10. RULES in Multiplying
Integers
1. When you multiply two
numbers with the same signs,
the product is positive.
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(8)(7)= (-9)(-

11. RULES in Multiplying
Integers
2. When you multiply two
numbers with different signs,
the product is negative.
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(-)(+)=-
(+)(-)=-

12. RULES in Multiplying
Integers
2. When you multiply two
numbers with different signs,
the product is negative.
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(- (5)(-

13. RULES in Multiplying
Integers
2. When you multiply two
numbers with different signs,
the product is negative.
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(- (12)(-

14. RULES in Multiplying
Integers
3. Any number
multiplied by 0 gives a
product of 0.
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(5)(0)= (0)(2)=

15. EXAMPLE:
(-5)(-
8)(2)
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Multiplication of Integers
15
=8
40
(2

16. EXAMPLE:
(-2)(-
8)(-3)
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Multiplication of Integers
16
=-
16(-

17. Board work marathon
(-5)
(- 8)
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17
40

18. Board work marathon
(-2)
(3)
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18
-6

19. Board work marathon
(8)
(4)
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19
32

20. Board work marathon
(-9)
(3)
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20
-27

21. Board work marathon
(0)
(120,00
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21
0

22. Board work marathon
(4) (-
9)
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22
-36

23. Board work marathon
(7)
(3)
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23
21

24. Board work marathon
(-6)
(-6)
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24
36

25. Board work marathon
(-9)
(6)
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25
-54

26. Board work marathon
(8)
(8)
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26
64

27. Board work marathon
(-8)
(7)
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27
-56

28. Board work marathon
(8) (-
9)
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28
-72

29. Board work marathon
(7)
(6)
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29
42

30. Board work marathon
(-4)
(-7)
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30
28

31. Board work marathon
(9) (-
2)
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31
-18

32. Board work marathon
(5) (-
10)
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32
-50

33. Board work marathon
(4)
(6)
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33
24

34. Board work marathon
(2) (-
11)
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34
-22

35. Board work marathon
(-8) (-
10)
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35
80

36. HARDER
(2)(3)
(-2)
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36
-12

37. HARDER
(2)(-
4)(-2)
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37
16

38. HARDER
(-5)(-
6)(-2)
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38
-60

39. HARDER
(-3)(-
5)(4)
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39
60

40. HARDER
(2)(7)
(8)
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40
112

41. ACTIVITY/ASSIGNMEN
T
41
Find the product of
the following:
1. (5)(12)
2. (-8)(4)
3. (-5)(3)(2)
4. (-7)(4)(-2)
6. (11)(-5) =
7. (-7)(-7)=
8. (-6)(5) =
9. (-3)(-4) =
10. (-10)(12) =