QUEZON NATIONAL HIGH SCHOOL Ibabang Iyam, Lucena City MATHEMATICS 9 THIRD QUARTER ACTIVITY SHEET 1: RATIOS AND PROPORTIONS Name: DATE: (Surname) (First Name) SCORE: (M.I) GRADE & SECTION: Subject Teacher: Learning ActivitY A. Simplify the following 1. 2 : 4 2. 6. 20:16 15 7. 20 35 7 3. 6 : 18 8. 18 : 12 4. 21 : 15 9. 9 : 21 : 27 5. 24 10. 15 : 36 96 B. Use the figure at the right to find the ratios of the following: 1. OL : OI 2. LI : VE 3. OE : VE 4. OL : LI 5. OV : VE C. Find the unknown term of the proportion. 1. 7 : 8 = 4 : x 2. 3. 2 3 = 𝑥−3 4 𝑥 12 = = 𝑦 15 2 3 D. Solve: 1. The segment 15 cm long is divided into two parts in the ratio 2 : 3. What us the length of each part? 2. The lineman needed 1500 meters of electric wire for a subdivision. He divided the wire into the ratio 1:2:3:4:5. How long is each piece of electric wire? “What is best in mathematics deserves not merely to be learned as a task but to be assimilated as a part of daily thought, and brought again and again before the mind with ever-renewed encouragement." ~Bertrand Russell~