Data Handling Exercise 4.1 1). A survey was made to find the type of music that a certain group of young people liked in a city. The adjoining pie chart shows the findings of this survey. From this pie chart answer the following: (i) If 20 people liked classical music, how many young people […]
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Understanding Quadrilaterals Exercise 3.4 1). State whether True or False. (a) All rectangles are squares (b) All rhombuses are parallelograms (c) All squares are rhombuses and also rectangles (d) All squares are not parallelograms. (e) All kites are rhombuses. (f) All rhombuses are kites. (g) All parallelograms are trapeziums. (h) All squares are trapeziums. Answer:
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Understanding Quadrilaterals Exercise 3.3 1). Given a parallelogram ABCD. Complete each statement along with the definition or property used. (i) AD = …… (ii) Ð DCB = …… (iii) OC = …… (iv) m Ð DAB + m Ð CDA = …… Answer: (i) AD = BC The opposite sides of a parallelogram are congruent. (ii)
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Understanding Quadrilaterals Exercise 3.2 1). Find x in the following figures. (a) (b) Solution: (a) 1250 + 1250 + x0 = 3600 the sum of the measures of the external angles of any polygon is 360°. 2500 + x0 = 3600 x0 = 3600 – 2500 x0 = 1100 (b) 600 + 900 +
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Understanding Quadrilaterals Exercise 3.1 1). Given here are some figures. Classify each of them on the basis of the following. (a) Simple curve (b) Simple closed curve (c) Polygon (d) Convex polygon (e) Concave polygon Answer: (a) Simple curve Ans: Fig 1, 2, 5, 6, 7
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Linear Equations in One Variable Exercise: 2.1 Solve the following linear equations. 1). 2). 3). 4). 5). 6). Simplify and solve the following linear equations. 7). 3(t – 3) = 5(2t + 1) 8). 15(y – 4) –2(y – 9) + 5(y + 6) = 0 9). 3(5z – 7) – 2(9z – 11)
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Linear Equations in One Variable Exercise: 2.1 Solve the following equations and check your results. 1). 3x = 2x + 18 3x – 2x = 18 transposing 2x to LHS x = 18 2). 5t – 3 = 3t – 5 5t – 3t = – 5 + 3 2t
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Rational Numbers Exercise: 1.1 1). Name the property under multiplication used in each of the following. 2). Tell what property allows you to compute 3). The product of two rational numbers is always a rational number. Additional Problems For Practice 1). Write the additive inverse of each of the following. 2). Find the multiplicative inverse
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Click here for the solutions of Std 8 Maths 1). Rational Numbers Exercise 1.1 2). Linear Equations in One Variable Exercise 2.1 Exercise 2.2 3). Understanding Quadrilaterals Exercise 3.1 Exercise 3.2 Exercise 3.3 Exercise 3.4 4). Data Handling Exercise 4.1 Exercise 4.2 5). Squares and Square Roots Exercise 5.1 Exercise 5.2 Exercise 5.3 Exercise 5.4 6).
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