10. 9. Yes, we can say that we can add integers in any order. IMPORTANT QUESTIONS FOR CBSE CLASS 7 MATHEMATICS Integers – Chapter 1. Find the product, using suitable properties: The given equation is in the form of Distributive law of Multiplication over Addition. CBSE CLASS 7 MATHEMATICS INTEGERS – Chapter 1 / MCQ Multiple Choice Questions. Rita travels a distance in east direction = 20 km, Rita travels a distance in west direction = – 30 km, Hence, we will represent the distance travelled by Rita from point A by a negative integer, i.e. (a) Write a pair of negative integers whose difference gives 8. Properties of Division of Integers This (ii) square is a magic square, because sum of each row, each column and diagonal is equal to -9. CBSE Class 7 Maths Notes Chapter 1 Integers. The sum of two integers is 116. Let us take the lowered temperature as negative, Change in temperature after 10 hours = (-5) × 10 = -50oC, ∴The final room temperature after 10 hours of freezing process = 40oC + (-50oC). When students feel stressed about searching for the most comprehensive and detailed NCERT Solutions for Class 7 Maths, we at BYJU’S have prepared step by step solutions with detailed explanations.We advise students who want to score good marks in Maths, to go through these solutions and strengthen their knowledge. (b) What is the temperature difference between the hottest and the coldest places among the above? Hence, the temperature difference between the hottest and the coldest place is 30oC. When we divide a positive integer by a negative integer, we get a negative integer. Which team scored more? What would be the temperature at mid-night? Rita goes 20 km towards east from a point A to the point B. Total score obtained by team A = – 40 + 10 + 0, Total score obtained by team B = 10 + 0 + (-40). 11. All these solutions are provided by considering the new pattern of CBSE, so that students can get thorough knowledge for their exams. Commutativity of Addition: We know that 3+ 5 = 5 + 3 = 8, that is, the whole numbers can be added in any order. Lastly we observe that (i) He jumps 3 steps down and then jumps back 2 steps up. Note: The division is commutative for integers when the dividend and divisor are equal. Also, (-2) × 5 = (-10). we get a negative integer). Your email address will not be published. In general, we can say that for any integer a, a ÷ 1 = a. Thus, a loss of ₹ 1000 will be incurred by the company. Because positive integer. Let us substitute the value of x in the place of blank. Integers Class 7 NCERT Book: If you are looking for the best books of Class 7 Maths then NCERT Books can be a great choice to begin your preparation. Division of a negative integer by a positive integer Learn Videos. Check which of the following is a magic square. These questions are solved by experts to help the students to crack exercise very easily. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Closure Under Multiplication temperature at Shimla? A monkey is sitting on the topmost step (i.e., the first step). In general, for any two integers a and b, a × b = b × a, The product of a negative integer and zero is zero a × 0 = 0 × a=0, 1 is the multiplicative identity for integers. ∵Any integer is multiplied with zero and the answer is zero itself. So, what will the sum 8 in (b) represent? 2. Required fields are marked *. At BYJU’S you can get the accurate solution in PDF format for NCERT Solution for Class 7 Maths Chapter 1. When we divide a negative integer by a positive integer, we first divide them as whole numbers and then put minus sign (-) before the quotient. (- 20) ÷ 5 = -4 = -(20 ÷ 5) So, we say that integers are closed under multiplication. NCERT Class 7 Maths Integers. 3. 1. (iii) Heena gets two correct and five incorrect answers out of seven questions she attempts. 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