NCERT Solutions Class 7 Mathematics Chapter 15 Visualizing Solid Shapes
Exercise 15.1 Q.1) Identify the nets which can be used to make cubes (cut out copies of the nets and try it): Sol.3) No, this cannot be a net for a die. Because one pair of opposite faces will have 1 and 4 on them and another pair of opposite faces will have 3 and 6β¦
NCERT Solutions Class 7 Mathematics Chapter 6 Triangle and its properties
Exercise 6.1 Q.1) In Ξ PQR, D is the mid-point of QR. PM is _______ PD is ________ Is QM = MR? Sol.1) Given: QD = DR β΄ PM is altitude. PD is median. No, ππ β ππ as D is the mid-point of QR Q.2) Draw rough sketches for the following: (a) In Ξ π΄π΅πΆ, BE is aβ¦
NCERT Solutions Class 7 Mathematics Chapter 4 Simple Equations
Exercise 4.1 Q.1) Complete the last column of the table Sol.1) (i) π₯ + 3 = 0 L.H.S. = π₯ + 3 By putting π₯ = 3, L.H.S. = 3 + 3 = 6 β R.H.S. β΄ No, the equation is not satisfied. (ii) π₯ + 3 = 0 L.H.S. = π₯ + 3 By putting π₯ = 0, L.H.S. = 0 + 3 = 3 β R.H.S. β΄ No, the equation isβ¦
NCERT Solutions Class 7 Mathematics Chapter 10 Practical Geometry
Exercise 10.1 Q.1) Draw a line, say AB, take a point C outside it. Through C, draw a line parallel to AB using ruler and compasses only. Sol.1) To construct: A line, parallel to given line by using ruler and compasses. Steps of construction: (a) Draw a line-β¦
NCERT Solutions Class 7 Mathematics Chapter 11 Perimeter and Area
Exercise 11.1 Q.1) The length and breadth of a rectangular piece of land are 500 π and 300 π respectively. Find: (i) Its area. (ii) The cost of the land, if 1π2 of the land costs π π . 10,000. Sol.1) Given: Length of a rectangular piece of land = 500 π andβ¦
NCERT Solutions Class 7 Mathematics Chapter 5 Lines and angles
Exercise 5.1 Q.1) Find the complement of the following angles Sol.1) The sum of values of complementary angles is 90Β°. (i) 20Β° Complement = 90Β° β 20Β° = 70Β° (ii) 63Β° Complement = 90Β° β 63Β° = 27Β° (iii) 57Β° Complement = 90Β° β 57Β° = 33Β° Q.2) Find the supplement of theβ¦
NCERT Solutions Class 7 Mathematics Chapter 1 Integers
Exercise 1.1 Q.1) Following number line shows the temperature in degree Celsius Β°C at different places on a particular day a) Observe this number line and write the temperature of the places marked on it. b) What is the temperature difference between the hottestβ¦
NCERT Solutions Class 7 Mathematics Chapter 2 Fractions and Decimals
Exercise 2.1 Q.2) Arrange the following in descending order i) 2/9, 2/3, 8/21 ii) 1/5, 3/7, 7/10 Sol.2) i) 2/9, 2/3, 8/21 Letβs take LCM of 9,3,21 9 = 3 Γ 3 21 = 3 Γ 7 3 = 3 Γ 1 So, we can take two 3βs as a commonβ¦
NCERT Solutions Class 7 Mathematics Chapter 13 Exponents and Power
Exercise 13.1 Q.1) Find the value of: (i) 26 (ii) 93 (iii) 112 (iv) 54 Sol.1) (i) 26 2 Γ 2 Γ 2 Γ 2 Γ 2 Γ 2 = 64 (ii) 93 9 Γ 9 Γ 9 = 729 (iii) 112 11 Γ 11 = 121 (iv) 54 5 Γ 5 Γ 5 Γ 5 = 65 Q.2) Express the following in exponential form: (i) 6 Γ 6 Γ 6 Γ 6 (β¦
NCERT Solutions Class 7 Mathematics Chapter 3 Data Handling
Exercise 3.1 Q.1) Find the range of heights of any ten students of your class. Sol.1) Let the heights (in cm) of 10 students of our class be 125, 127, 132, 133, 134, 136,138, 141, 144, 146 Highest value among these observations = 146 Lowest value among these observations =β¦
NCERT Solutions Class 7 Mathematics Chapter 7 Congruence of Triangle
Exercise 7.1 Q.1) Complete the following statements: (a) Two line segments are congruent if __________. (b) Among two congruent angles, one has a measure of 70Β° ,the measure of other angle is __________. (c) When we write β π΄ = β π΅, we actually mean ___________β¦
NCERT Solutions Class 7 Mathematics Chapter 8 Comparing Quantities
Exercise 8.1 Q.1) Find the ratio of : a) Rs 5 to 50 paise b) 15 kg to 210 g c) 9 m to 27 cm d) 30 days to 36 hour Sol.1) To find ratios, both quantities should be in same unit. (a) Rs. 5 to 50 paise β 5 Γ 100 ππππ π π‘π 50 ππππ π [ Rs. 1 = 100 paise] β 500 paiseβ¦
NCERT Solutions Class 7 Mathematics Chapter 12 Algebraic Expressions
Exercise 12.1 Q.1) Get the algebraic expressions in the following cases using variables, constants and arithmetic operations: (i) Subtraction of z from y. (ii) One-half of the sum of numbers x and y. (iii) The number z multiplied by itself. (iv) One-fourth of the productβ¦