Mathematics, SNARE PROGRAM. GRADE 7-GRADE 10

BASIC MATH

1. SUBTRACTING LIKE SIGNS

2. RULES IN Subtracting numbers with like signs STEP 1: Change the subtraction sign to addition STEP 2: Change the sign of ONLY the next number to its opposite. STEP 3: Follow the rules for addition

3. TO MAKE IT SIMPLE, REMEMBER THIS… K C C

4. TO MAKE IT SIMPLE, REMEMBER THIS… K C C EEP HANGE HANGE

5. TO MAKE IT SIMPLE, REMEMBER THIS… K C C e ep the sign of the first number hange ( - ) to (+) hange the sign of the second number

6. Example: subtract -14 and -12 -14 – (-12) = Then follow the rules for addition. The signs are now the same, so add and give the common sign. 14 + 12 = 26. -14 + 12 = -26

7. QUIZ Instruction: Read the questions carefully. Choose the letter of the correct answer.

8. 1. Subtract: (-11) – (-17) A. -28 B . -6 C . 6 D. 28 2 . What is, 46 – 36? A . -82 B . -10 C . 10 D . 82 3 . Find the difference of (-33) – (-47). A . 80 B . 14 C . -14 D. -80

9. 4. What is 14 – 6? A . 8 B . 6 C .-6 D . -8 5 . Take the difference of (-134) – (-143). A . -277 B . -9 C . 9 D . 277 6 . You are ₱5 in debt. You borrow ₱12 more. What is the total amount of your debt? A . -₱17.00 C. ₱17.00 B . -₱7.00 D . ₱7.00

10. 7 . Ronnie is playing a card game called Subzero , where the goal is to get the lowest possible score. In the first round, Ronnie scored 6 points. In the second round, he scored 12 points. What is the difference in Ronnie’s score? A . 18 B . 6 C . -6 D . - 18 8 . In Carmen, Cotabato , the temperature was -14 o C in the morning. If the temperature dropped 7 o C, what is the difference in temperature? A . -21 o C C. 18 o C B . -18 o C D . 21 o C

11. 9. A submarine was situated 800 meters below sea level. If it descends 250 meters, what is its difference below sea level? A. -1050 meters C. 550 meters B. -550 meters D. 1,050 meters 10 . On the first play, the football team lost 6 yards. On the second play, the team lost 5 yards. What was their total change in yards? A. 1 points C. -1 points B . 11 points D. -11 points

12. 1. C 2. C 3. B 4. A 5. C ANSWER KEY: 6. D 7. C 8. A 9. B 10. A