Page 83 - Maths Skills - 7
P. 83
Comparing Quantities
5 5 Comparing Quantities
Learning Outcomes
In this chapter, you will learn about:
� Ratio � Unitary method � Profit and loss
� Proportion � Percentage � Simple interest
� Continued proportion � Increase or decrease per cent
Boot-Up (To Recapitulate Previous Knowledge of Concepts)
COMPETENCY BASED QUESTIONS
A. Multiple-Choice Questions
1. Ratio of 50 paise to 1 rupee is
(i) 50 : 1 (ii) 1 : 2 (iii) 1 : 50 (iv) 2 : 1
2. 25% of 1 kg is
(i) 750 g (ii) 125 kg (iii) 250 g (iv) 25 g
3. Find the ratio of speed of a cycle moving at 15 km per hour to the speed of a scooter moving at 45 km per
hour.
(i) 1 : 3 (ii) 2 : 1 (iii) 1 : 2 (iv) 3 : 1
4. What will be 5% in fractions in the simplest form?
(i) 1/30 (ii) 1/10 (iii) 2/15 (iv) 1/20
B. Fill in the Blanks
1. Ratio of 20 minutes to 2 hrs = _________.
2. Are 13, 39, 7, 21 in proportion?
3. The cost of 1 book is ` 15. The cost of 9 books will be _________.
4. If x:32 :: 4:16, then the value of x is _________.
C. Write ‘T’ for true and ‘F’ for false Statements
1. Ratio has no units.
2. Ratio cannot be written as fraction.
3. Liquids and gases are measured by volume.
4. The structure having a definite shape is called solid.