Mathematics

1. ADDING AND SUBTRACTING INTEGERS

3. RULES IN ADDING INTEGERS
ADDING SAME SIGN INTEGERS
1. Add the numbers
2. Copy the sign
ADDING DIFFERENT SIGN INTEGERS
1. Subtract the numbers
2. Copy the sign of the larger number.

4. RULES IN SUBTRACTING INTEGERS
1. Copy the minuend
2. Proceed to addition
3. Get the opposite of the
subtrahend.

7. 1. Read and solve mentally.
2. Write the correct answer on your
board.
3. Follow the time limit given in each
category.
4. Observe SILENCE.

8. 5. Questions will be read twice. After the
reading, the teacher will say “go”, and the
timer starts. Everybody should stop
writing as soon as teacher says “stop”

9. EASY ROUND
TIME LIMIT : 5 SECONDS PER QUESTION

10. EASY ROUND
QUESTION 1
2+ (-7)=____

11. EASY ROUND
ANSWER 1
- 5

12. EASY ROUND
QUESTION 2
(-3)+ (-5)=___

13. EASY ROUND
ANSWER 2
- 8

14. EASY ROUND
QUESTION 3
(-6)+(-2)+18

15. EASY ROUND
ANSWER 3
10

16. AVERAGE ROUND
TIME LIMIT : 10 SECONDS PER QUESTION

17. AVERAGE ROUND
QUESTION 1
(-8)+(-12)-(-15)

18. AVERAGE ROUND
ANSWER 1
-5

19. AVERAGE ROUND
QUESTION 2
-8 – (-9 + 3)

20. AVERAGE ROUND
ANSWER 2
-2

21. DIFFICULT ROUND
TIME LIMIT : 20 SECONDS

22. DIFFICULT ROUND
A submarine cruises at a depth of 40
meters. Directly above it is an
airplane flying at an altitude of 192
meters. How far apart are they?

23. 192 meters
-40 meters
ANSWER:
232 METERS

24. “Every negative thought is a down
payment on your future. Every positive
thought is an investment to your
future.”

25. PAIR ACTIVITY!
Mrs. Caspe deposited an amount of ₧ 25,000
in her savings account. After a month, she
deposited an additional amount of ₧ 10,000.
The next month she withdrew an amount of
₧15,000 for her son’s tuition. The following
month she withdrew ₧7,000. How much was
left in her savings account?

26. ANSWER

27. Solution:
(27 000 + 10, 000) – (15,000 +7,000)
37,000 – 22,000
15,000
She had ₧ 15,000 left in her bank account.

28. HOMEWORK!
Review for quiz on Wednesday. Good Luck!