# 4th-activity-1

```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)
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.&quot;
~Bertrand Russell~
```