Comparing Sizes and Ratios

1. If a pencil is 15 cm long and an eraser is 5 cm long, what is the ratio of the pencil's length to the eraser's length? A) 3:1 B) 2:1 C) 5:1 D) 1:3

• 6:1

• 4:1

• A) 3:1

• 1:5

2. A rectangle has a length of 8 cm and a width of 4 cm. What is the ratio of its length to its width? A) 2:1 B) 1:2 C) 4:1 D) 1:4

• A) 2:1

• 1:3

• 3:1

• 5:2

3. If a book is 20 cm tall and a notebook is 10 cm tall, which is taller? A) Book B) Notebook C) Both are equal D) Cannot determine

• D) Cannot determine

• C) Both are equal

• B) Notebook is taller

• A) Book

4. A map shows a distance of 5 cm representing 50 km. What is the scale of the map? A) 1:10 B) 1:100 C) 1:1000 D) 1:10000

• 1:1000000

• 1:50000

• 1:250000

• 1:200000

5. If a car travels 120 km in 2 hours, what is the ratio of distance to time? A) 60 km/h B) 30 km/h C) 90 km/h D) 40 km/h

• 60 km/h

• 80 km/h

• 50 km/h

• 70 km/h

6. A triangle has sides measuring 3 cm, 4 cm, and 5 cm. What is the ratio of the longest side to the shortest side? A) 5:3 B) 4:3 C) 3:5 D) 5:4

• 2:1

• 3:4

• 4:5

• 5:3

7. If a cake is cut into 8 equal pieces and 3 pieces are eaten, what is the ratio of remaining pieces to eaten pieces? A) 5:3 B) 3:5 C) 8:3 D) 3:8

• A) 5:3

• 2:6

• 6:2

• 4:3

8. A bottle holds 1 liter of water. If you pour out 250 ml, what is the ratio of water left to water poured out? A) 3:1 B) 1:3 C) 4:1 D) 1:4

• A) 3:1

• 5:1

• 1:2

• 2:1

9. If a garden is 12 m long and 6 m wide, what is the ratio of length to width? A) 2:1 B) 1:2 C) 3:1 D) 1:3

• 2:3

• 1:1

• A) 2:1

• 4:1

10. A toy car is 10 cm long and a real car is 4 m long. What is the ratio of the toy car's length to the real car's length? A) 1:40 B) 1:4 C) 4:1 D) 10:1

• A) 1:40

• 5:1

• 2:1

• 1:10