CBSE Class 7 Mathematics Finding the Unknown MCQs Set J

Question. In ancient India, two sides of equation were written.
(a) side by side
(b) in different pages
(c) one below the other
(d) with big brackets

Answer: C

Question. According to Bhaskara's horse problem, price of one horse was.
(a) 100 rupees
(b) 300 rupees
(c) 400 rupees
(d) 50 rupees

Answer: A

Question. Mathematician who wrote Brāhmasphuṭasiddhānta was.
(a) Aryabhata
(b) Brahmagupta
(c) Bhaskara
(d) Al-Khwarizmi

Answer: B

Question. Subtraction is the inverse operation of.
(a) divide
(b) multiply
(c) addition
(d) none

Answer: C

Question. To solve 5x - 4 = 7, we first remove the -4 by.
(a) adding 4 to both sides
(b) subtracting 4
(c) multiplying 4
(d) making it zero

Answer: A

Question. Al-Khwarizmi lived in.
(a) India
(b) Iraq
(c) Egypt
(d) London

Answer: B

Question. Formula x = (D - B) / (A - C) was given by.
(a) Aryabhata
(b) Al-Khwarizmi
(c) Brahmagupta
(d) Newton

Answer: C

Question. Delivery charge for Madhubanti's snacks was.
(a) free
(b) 25
(c) 50
(d) 100

Answer: C

Question. Ramesh has how many more marbles than Suresh.
(a) 60
(b) 10
(c) 30
(d) 20

Answer: C

Question. In Akash's math trick, final answer was 24, starting number was.
(a) 10
(b) 5
(c) 7
(d) 24

Answer: C

Question. One quarter of a number increased by 9 gives the same number. Number is.
(a) 12
(b) 36
(c) 9
(d) 24

Answer: A

Question. Finding value of unknown letter is called.
(a) writing
(b) solving
(c) reading
(d) making

Answer: B

Question. If we remove equal weights from both plates, scale will be.
(a) same balanced
(b) falling down
(c) tilted
(d) very heavy

Answer: A

Question. Sunita saves money every month.
(a) 650
(b) 4000
(c) 500
(d) 5050

Answer: C

Question. Madhubanti snack plate cost was.
(a) 50
(b) 25
(c) 500
(d) 450

Answer: B

Question. Value that is not known in a problem is called.
(a) number
(b) answer
(c) unknown
(d) given

Answer: C

Question. Trying different numbers to find correct answer is.
(a) lucky method
(b) wrong method
(c) trial and error
(d) simple method

Answer: C

Question. Al-Khwarizmi wrote a book called Hisab al-jabr wal-muqabala in.
(a) India
(b) Iraq
(c) Europe
(d) America

Answer: B

Question. Multiplication and division are.
(a) inverse operations
(b) same operations
(c) new operations
(d) easy operations

Answer: A

Question. Word Bīja in Bījagaṇita means.
(a) tree
(b) seed
(c) fruit
(d) flower

Answer: B