(iii) 53 x (-9) – (-109) x 53 (iv) 68 x (-17) + (-68) x 3, If ‘*’ is an operation have, such that for integers a and b. (c) Rs. Let difference in time denoted by positive, when Sana wins the race and negative, when Sana loses the race. When we change the order of integers, their difference remains the same. (b) -21 True In questions 72 to 108, state whether the statements are True or False. Difference between these two points, A and B (c) -a (b) −Rs. Product of a negative integer and a positive integer is a negative integer, i.e. Proton charge + Electron charge = Ion charge Find successor of – 16 False (b) What will be the charge on an atom, if it loses an electron? True Question 20. NCERT Exemplar Class 7 Maths Book PDF Download Chapter 1 Integers Solutions. False (a) 10 (b) -67 (b) – 1 So, [12 x (- 7)] x 5 = 12 x [(- 7) x 5], 23 x (- 99) = ____ x (- 100 + ____ ) = 23 x ____ + 23 x ____, We can write the equation as, Also, with cheque number 275146 on 12/9 deposited amount was Rs. You have Rs. Question 22. Let first integer =8and second integer = – 2 By practising given Class 7 Chapterwise Important Questions with solutions will help in scoring more marks in your Examinations. Difference = -11 – (- 6) = -11 + 6 = (- 5). Also, (- 25) x [6 + 4] = – 25 x 6 + (- 25) x 4 What’s the error? If a man starts from 50m above the ground, how long will it take him to reach at 2nd floor of basement? (a) -10 (b) – 4 (c) 0 (d) 9. What will be the sign of the product if we multiply together 8 negative integers ? (a) X (b) Y (c) Z (d) W, (c) All the points are equally spaced. (-5) + (-3)=-5-3=-8 (c) -18° to-11° (d) -5° to 5°, (a) 32° – 23° = 9° (b) 1°-(-10)° = 1° + 10° = 11° (maximum) Electron charge = -1 – 9 = -10 (a) 0 (b) 5 (c) – 7 (d)-5. a x b = b x a where, a and b are integers. (b) Positive Ascending order -7, – 5,0, 5,10 If the dividend and divisor have unlike signs, what is the sign of the quotient? True What is the vertical distance between these two points? On the number line, it is shown as (a) – (-a) (b) a x (-1) (c) — a (d) a + (-1), [additive inverse of an integer is the same integer value, with opposite sign], So, Now ‘- a’ is the additive inverse of a. Now, write the missing information in the table given below: (a) For Hydroxide ion, Find 0 x 7 One division = 5 units. Question 11. Question 6. Raghu wants to draw water from the well. (a) a (b) 1 (c) 0 (d) -1, (b) Multiplicative identity for an integer a is 1. (d) By observation, we can say that the sum of both values are same in options (a), (b) and (c). So, as we can see – 9 lies on the right hand side of -10. What do we call the set of negative numbers and whole numbers? Descending order → 10, 5, 0, – 5, – 7 Visualising Solid Shapes Class 7 Notes Maths Chapter 15, Exponents and Powers Class 7 Notes Maths Chapter 13, Algebraic Expressions Class 7 Notes Maths Chapter 12, Perimeter and Area Class 7 Notes Maths Chapter 11, NCERT Solutions for Class 10 Social Science Free PDF | Download All Chapters Class 10 NCERT SST Textbook Solutions, NCERT Solutions for Class 10 Maths PDF Download | Free Chapter-wise NCERT Maths Solutions, NCERT Solutions for Class 10 Science Free PDF Download | Chapter Wise NCERT Science Solutions for Grade 10, Rational Numbers Class 7 Notes Maths Chapter 9, Concise Mathematics Class 10 ICSE Solutions, Fractions and Decimals Class 7 Extra Questions, The Triangles and its Properties Class 7 Extra Questions, Congruence of Triangles Class 7 Extra Questions, Comparing Quantities Class 7 Extra Questions, Practical Geometry Class 7 Extra Questions, Perimeter and Area Class 7 Extra Questions, Algebraic Expressions Class 7 Extra Questions, Exponents and Powers Class 7 Extra Questions, Visualising Solid Shapes Class 7 Extra Questions. Product of three negative integers is a negative integer. (b) 10 Then, The product of 2 negative integers is a positive integer. 15-8 + (-9), 27. (b) 9 x (-5) x 6 x (-3) (- a) + b = b + additive inverse of ___ . (a) – 32 On 29/9 with cheque number 801351, deposited amount was Rs. (ii) How many questions were given in the test? (-9)+ (-11) = – 9- 11 = -20 Net change in position = 540 + (- 268) + (116) + (-152) + (490) + (- 844) + 94 = – 24 m Initial position was 380 m. So, at the end of the ride the position would be = 380+ (-24) = 356 m, Evaluate the following, using distributive property. Correct answer = -4 + d= -4+(-6) = -4-6 = -10. (b) On its left side Sum of two integers is always an …………… ? (a) Which location is closest to sea level? (d) none of these, Question 5. Reeta evaluated -4 + d for d = — 6 and gave an answer of 2. If a x (b −c) is 8 for a = 2, b = 10 and c = 6 then a x b − a x c is equal to Free PDF download of Important Questions with solutions for CBSE Class 7 Maths Chapter 1 - Integers prepared by expert Mathematics teachers from latest edition of CBSE(NCERT) books. Find his net profit or loss in 3 days. Answer: (b) (a + b) + c Which of the following does not represent an integer? When we change the order of integers their sum remains the same. Browse further to download free CBSE Class 7 Maths Worksheets PDF . If ‘a’ is an integer, then ( – a) is its ……………… inverse. ∴Charge on one proton = (+1) (c) None of these. (b) -21 100 Hence, LHS = RHS, ∵ LHS = (-3) x 3 = (- 9) (b) 0 Because, if we subtract two integers we get another integer. Let A be the point above the sea level and B be the point below the sea level. Let first integer = (- 3) and second integer = (-10) (b) a (d) (-1) x (-1) x (-1) x (-1) x (-1) x (-1). (d) 12. => (— 10) < (- 5) and (-10) <2. (a) 30 (a) -1 (c) None of these. Since, an atom has equal number of protons and electrons. ∴ LHS = (-5) x 33 = (-165) (b) 0 (d) None of these. (a) 7 (c) On its right side = Already saved amount + Deposited amount – Debited amount (paid amount) So, Which of the following is different from the others? Important Maths Questions for Class 7 CBSE with Answers Chapter Wise gives you chapter wise tactics to prepare yourself for the CBSE Class 7 final examination. (a) + Rs. Everest, which is 8848 m above sea level and the lowest point is challenger deep at the bottom of Mariana Trench which is 10911 m below sea level. (b) By observing the series, difference between two consecutive numbers is 25, i.e. On a number line, when we add a negative integer, we A multistory building has 25 floors above the ground level each of height 5 m. It also has 3 floors in the basement each of height 5m. e.g. (a + b) + c = a + (b + c), => (x + y) + z = x + (y + z), Zero (0) is an additive identity for integers, i.e. a – b ≠ b – a where, a and b are integers. ∵ 99 x 101 = 9999 Difference = -1-4 = -5<(-4). In a true-false test containing 50 questions, a student is to be awarded 2 marks for every correct answer and -2 for every incorrect answer and 0 for not supplying any answer. False Electron charge = Ion charge – Proton charge = + 1 -11 = -10 (c) None of these. (d) Below 0, Question 14. …………… added to or subtracted from any integer is the integer itself. It is impossible to find greatest ………….. and smallest ……………… integer. −67 × (−1) = ? 99 x 101 can be written as (100 – 1) x (100 + 1). Product of two negative integers is a positive integer, i.e. Option (d),7 x(-11) = -77, (- 10) x (- 5) + (- 7) is equal to (a) 0 (b) 5 (c) – 7 (d) -5. (a) (-3) x 3 equals to – 9. Thus, net amount available in bank account will be (d) None of these. Which of the following statements is not true? Option (b), – (11 x 7) = – 77 (c) (- 25) x [6 + 4] = (- 25) x 10 (b) < The record below, shows all of your transactions during the month. Question 18. Hence, zero always remains in the middle of the arrangement. So, first integer = – 3 and second integer =12 e.g. (c) Above 0 Smallest positive integer is ………………. RHS = (-12) – (-3) = (-12) + 3 = (-9) (i) How many incorrect answers has she attempted? e.g. 25. (c) -30 Question 30. (c) -11°-(-18)°=-11°+18° = 7° (d) 5° -(-5°) = 5° + 5° = 10°. Question 5. By observing the number line, state which of the following statements is not true? ; (a) When two positive integers are added, we always get a positive integer. a x (b + c) = a x b + a x c] Hence, the ion charge in an Aluminium ion is 3. (d) 1, Question 2. Hence, the successor of 0 = 0 + 1 = 1 but 1 ≠ 1 x (-25). (a) – 2 Ramu went wrong in solving – (- 3) and took it as – 3 only. Find predecessor of – 3 For two integers, such that one is smaller than – 11 and other is greater than -11. Which of the following is not the additive inverse of a? Multiplication is not commutative for integers. (−4) × (−3) × (−2) = _______ e.g. = 1 – a + a= + 1 (c) 9 ], (a) (- 8) x [(- 3) x (- 4)] (b) [(- 8) x (- 4)] x (- 3) If x, y and z are integers, then (x +____ ) + z =____ + (y +____ ), Addition is associative for integers, i.e. So, X = -15 + 5 = -10 (a) move to the right In questions 26 to 30, encircle the odd one of the following: (c) By observation, we can say that both the values are same in options (a), (b) and (d). (d) (-1) x (-1) x (-1) x (- 1) x {-1) x(-1) = 1 (a) B is 2 (b) A is – 4 (c) S is -13 (d) B is – 4. On the following number line, (- 4) x 3 is represented by the point_____ . False (c) Locations from the least to the greatest elevation will be in the order A,Sand D. You are at an elevation 380 m above sea level as you start a motor ride. The addition of integer is associative. So, the answer is 0. What’s the error? (a) What is the charge on an atom? The next number in the pattern – 62,- 37,- 12 is_________________ . |-89|, -89, -21, |-21| Let first integer = (- 8) and second integer = (- 9) [∵ — 8 < — 6 and – 9 < – 6] = a – (a + 1) = (-1). -4 the quotient is 4 as both signs are cancelled out. (b) 5 ÷ (-1) equals to – 5. What is the difference between the levels of these two places? (b) When two negative integers are added, we always get a negative integer.