CBSE Class 7 Mathematics Operations with Integers MCQs Set D

Question. Sum of two numbers is 25 and difference is 11, numbers are
(a) 10, 15
(b) 20, 5
(c) 18, 7
(d) 19, 6

Answer: C

Question. Machine 1 uses rule a + b - c. For numbers -10, -12, -9, result is
(a) –31
(b) –13
(c) 13
(d) –11

Answer: B

Question. Room temp is 32°C, lowers by 5°C every hour. After 10 hours temp is
(a) –18°C
(b) 18°C
(c) 50°C
(d) –50°C

Answer: A

Question. Cement company earns ₹8 profit for white and ₹5 loss for grey bag. Sells 3000 white and 5000 grey, result is
(a) ₹1000 profit
(b) ₹1000 loss
(c) ₹24000 profit
(d) ₹25000 loss

Answer: B

Question. Collatz Conjecture rule for odd number is
(a) Half of it
(b) Multiply by –3 and add 1
(c) Add 1
(d) Multiply by 2

Answer: B

Question. Sum of two numbers is 25 but difference is -11, numbers will be
(a) 18, 7
(b) 7, 18
(c) 10, 15
(d) 5, 20

Answer: B

Question. Movement is -4 means the direction is
(a) Rightward
(b) Upward
(c) Leftward
(d) Downward

Answer: C

Question. 4 into 2 calculation means adding 2 positives how many times
(a) 2 times
(b) 4 times
(c) 8 times
(d) 6 times

Answer: B

Question. Product of two fortunes (positive numbers) according to Brahmagupta is
(a) Debt
(b) Zero
(c) Fortune
(d) Negative

Answer: C

Question. Value of 1 into integer 'a' is always
(a) 1
(b) -a
(c) a
(d) 0

Answer: C

Question. In an exam, 5 marks for correct answer and -2 marks for wrong answer. Mala has 30 correct and 20 wrong answers. Total marks will be
(a) 150
(b) 40
(c) 110
(d) 100

Answer: C

Question. Integer multiplication property a into (b into c) = (a into b) into c is called
(a) Commutative
(b) Associative
(c) Distributive
(d) Closure

Answer: B

Question. a into (b + c) = a into b + a into c is known as
(a) Associative property
(b) Distributive property
(c) Commutative property
(d) Zero property

Answer: B

Question. One integer is positive and other is negative, product will be
(a) Positive
(b) Negative
(c) Zero
(d) Larger than both

Answer: B

Question. In exam, +5 for correct and -2 for wrong answer. Mala gets 30 correct and 20 wrong, total marks is
(a) 150
(b) 110
(c) 40
(d) 100

Answer: B

Question. When we say movement of coin is -4, the magnitude is
(a) –4
(b) 4
(c) 0
(d) 8

Answer: B

Question. Freezing process word problem starts at temperature
(a) 0°C
(b) 10°C
(c) 32°C
(d) 5°C

Answer: C

Question. After 10 hours of lowering 5°C every hour, room temp will be
(a) -50°C
(b) 18°C
(c) -18°C
(d) 50°C

Answer: C

Question. Brahmagupta used the word 'Rina' for
(a) Fortunes
(b) Debts
(c) Positive values
(d) Division

Answer: B

Question. Total marks for 30 correct and 20 wrong answers in the exam is
(a) 150
(b) 110
(c) 40
(d) 100

Answer: B