Page 40 - Maths Skills - 7

38 Maths

C. Match the following E. Assertion-Reason Based Questions

2 2 Directions for Questions 1 to 3: In each of the
1. × 2 (i) 0.8
3 3 questions given below, there are two statements
marked as Assertion (A) and Reason (R). Mark your
4
2. (ii) 0.5 answer as per the codes provided below:
5
(a) Both A and R are true and R is the correct
5 7 explanation of A.
3. (iii) 1
10 9 (b) Both A and R are true but R is not the correct
1 5 2 explanation of A.
4. ÷ (iv)
3 6 5 (c) A is true but R is false.

3312 (d) A is false but R is true.
5. (v) 3.312
1000 p p q
Q. 1. Assertion (A): If is a fraction, then × = 1
q q p
D. Case Study Based Questions Reason (R): Multiplication of a fraction by its
The construction of the Taj Mahal at Agra, one multiplicative inverse always equal to 1.
of the Seven Wonders of the World, started in the Q. 2. Assertion (A): 3.456 × 100 = 345.6
year 1631. Masons, stonecutters, inlayers, carvers, Reason (R): Multiplying a decimal by 100, then
painters, calligraphers, dome-builders and other decimal point is shifted to right by two places.
artisans were requisitioned from the whole of the
empire and also from central Asia and Iran. It took Q. 3. Assertion (A): The product of 1.07 and 2.006 is
approximately 22 years to build what we see today. 2.14642
An epitome of love, it made use of the services Reason (R): 1.07 × 2.006 can be written as
of 22,000 labourers and 1,000 elephants. The 107 2006
monument was built entirely out of white marble, 100 × 100
which was brought in from all over India and
Central Asia. After an expenditure of ` 32 million SUBJECTIVE TYPE QUESTIONS
approximately, Taj Mahal was finally completed in the
year 1653. F. Solve the following word problems
1
Answer the following questions on the basis of the 1. In a basket having 144 oranges, of the total

above data. 6
5 oranges are rotten. How many of them are in
1. If 12 of the labourers were stonecutters and
6 good condition?
1
11 were painters, which group had a greater 2. To stitch a dress, 4 m cloth is required. If the
number, and what was the difference between 2
5
them? cost of cloth is ` 77 per metre, find the cost of
6
17
2. Suppose part of the construction was done the cloth required for the dress.
25
in first half of the duration, then what part of 3. Mr. Rana earns ` 24,500 per month. He spends
the construction was done during the rest of the 9 of his income and deposits the remaining
10
years? money in his bank. How much money does he
2 save in a year?
3. If part of the total cost was used for painting
7 4. Find the area of square whose side is 6.25 m.
1
and on calligraphy, find out how much fraction 5. Find the cost of 15.1 kg rice, if cost of 1 kg rice
5 is ` 24.25.
of the amount was used for both.