Multiplication of Integers

2. Learning Target:
d. solve routine and non-routine problems
involving multiplication of integers using
appropriate strategies and tools.
a. describe and interpret multiplication
of integers;
c. cooperate with one’s group
mates in making an output; and
b. multiply integers;

3. What operation should be used to solve the problem above?
MATHEMATICAL SENTENCE: -2 x 5 = N
Solution:
1
The number line shows 5 jumps by 2 units going to the left since one of the integers is negative.
2
3
4
5

4. We can also use tiles to illustrate -2 x 5 = N
Solution:
*This means that multiplying a negative
integer by a positive integer results in a
negative product.
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
= -1 -1 -1 -1 -1
-1 -1 -1 -1 -1
-2 x 5 groups = -10

5. We can also use tiles to illustrate -2 x 5 = N
Solution:
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
= -1 -1 -1 -1 -1
-1 -1 -1 -1 -1
*Multiplying a positive integers by a
negative integer results in a negative
product.
-2 x 5 groups = -10

7. Here are more examples on
multiplying integers.

8. What operation should be used to solve the problem above?
MATHEMATICAL SENTENCE: +250 x +8 = N
Solution:
I earned ₱2000 from selling 8 sets of beauty products.
250
x 8
0
0
4
20

9. Here are more examples on
multiplying integers.