Ratio Quiz - CBSE Class 6 Mathematics

Free practice quiz: Ratio (CBSE Class 6 Mathematics). 11 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is the ratio of 4 to 8?

   1. 1:2
   2. 2:1
   3. 4:8
   4. 8:4
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   Answer: A. 1:2

   The ratio of 4 to 8 is simplified by dividing both numbers by their greatest common divisor, which is 4. Therefore, 4 ÷ 4 = 1 and 8 ÷ 4 = 2, giving us a ratio of 1:2.

2. What is the ratio of 15 to 25 in simplest form?

   1. 3:5
   2. 5:3
   3. 15:25
   4. 25:15
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   Answer: A. 3:5

   Both 15 and 25 can be divided by 5. So, 15 ÷ 5 = 3 and 25 ÷ 5 = 5, resulting in the ratio of 3:5.

3. In a class of 30 students, the ratio of boys to girls is 2:3. How many girls are in the class?

   1. 18
   2. 12
   3. 15
   4. 6
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   Answer: A. 18

   The total parts of the ratio is 2 + 3 = 5 parts. Each part represents 30 ÷ 5 = 6 students. The number of girls is 3 parts × 6 students/part = 18 girls.

4. If the ratio of the length to the width of a rectangle is 3:2 and the width is 10 cm, what is the length?

   1. 15 cm
   2. 13 cm
   3. 20 cm
   4. 30 cm
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   Answer: A. 15 cm

   With a ratio of 3:2, for every 3 units of length, there is 2 units of width. If the width is 10, the length is (3/2)*10 = 15 cm.

5. There are 50 students in a room in the ratio 3:2 of boys to girls. How many boys are there?

   1. 20
   2. 30
   3. 35
   4. 25
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   Answer: B. 30

   The total parts in the ratio is 3+2=5. With 50 students, each part represents 50/5=10. Thus, boys = 3×10 = 30 boys.

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