Page 119 - Maths Skills - 7

Assessment - 2 117

Read the paragraph carefully and answer the following questions.
16. Write the area of Thar, India.
17. After writing in standard form, arrange these values in descending order.
18. Find the total desert area of Gibson and great Victoria in standard form.

Assertion-Reason Based Questions
Directions for Questions 19 to 20: Each question consists of two statements of the questions given
below, there are two statements marked as Assertion (A) and Reason (R).mark your answer as per the
code provide below:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.

(c) A is true but R is false. (d) A is false but R is true.
19. Assertion (A) : There are 100 students in a class of which 80 are boys and rest are girls the ratio of
the number of boys and number of girls is 4:1.
Reason (R) : A ratio can be defined as the relationship or comparison of two numbers of the same
unit to check how bigger is one number than the other one.
20. Assertion (A) : 0 is not a rational number.
p
Reason (R) : A rational number is a type of real number, which is in the form where q is not
equal to zero. q
SUBJECTIVE BASED QUESTIONS
6 3 –5
21. Add the following numbers: , ,
7 8 28
22. Simplify by using law exponents (a × a × a × a ) ÷ (a × a × a ).
6
5
3
2
3
3
2
23. (i) Simplify and express the result as the power of 6.
  1  2  3   1  3  2
6
    ÷     ×() 0

   2      4  

(ii) Express the following in standard form: 1,82,60,00,000.
24. Karan borrowed `6000 from Kartik at the rate of 7% per annum. After 5 years Karan cleared the
account by giving ` 6,400 and a cycle to Kartik. Find the cost of the cycle
7
 4 −  15  −2 1   −3 −  1
−
25. Simplify (a)  ×  + (b)  ×   × 
 5 3  30  3 2   2 2 
26. (a) what percentage of 9000 is 1080?
(b) Divide `480 between Akhil and Deepa in the ratio 3 : 5.
27. A bus consumes 25 liters of diesel in covering a distance of 90 kilometers. How much diesel is
needed to cover 729 kilometers of distance? Also find out how much distance can be covered with
125 liters of diesel?
3 () 2 2 () 4
5
28. Simplify: ×
4 () 4 9 () 3
29. Find the value of: 3/4 + (–2/3) – 3/2 – (–7/12) + 5/6

30. In a clearance sale, a cloth merchant reduces the price by 14%. If the reduced price of a shirt is
`245.10, find its original price.