Basic Geometrical Ideas Exercise 4.6 Examples for Practice 1). From the figure, identify: (a) the centre of the circle O is the centre of the circle. (b) three radii Radius OA, OB, OC (c) a diameter AC is the diameter. (d) a chord ED is […]
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Basic Geometrical Ideas Exercise 4.5 Examples for Practice 1). Draw a rough sketch of quadrilateral PQRS. Draw its diagonals. Name them. Is the meeting point of the diagonals in the interior or exterior of the quadrilateral? The meeting point of the diagonals is in the interior of the quadrilateral. 2). Draw a rough
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Basic Geometrical Ideas Exercise 4.4 Examples for Practice 1). Draw a rough sketch of a triangle ABC. Mark a point P in its interior and a point Q in its exterior. Is the point A in its exterior or in its interior? Point A is neither in the exterior nor in the interior,
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Basic Geometrical Ideas Exercise 4.2 1). Classify the following curves as (i) open or (ii) Closed (a). Open (b). Closed (c). Open (d). Closed (e). Closed 2). Draw rough diagrams to illustrate the following. (a). Open curve (b). Closed curve 3). Draw any polygon and shade it’s interior. 4). Consider the given figure and
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Playing with Numbers Exercise 3.6 1). Find the HCF of the following numbers: a). 18, 48 b). 30, 42 c). 18, 60 d). 27, 63 e). 36, 84 f). 34, 102 g). 70, 105, 175 h) 91, 112, 49 i). 18, 54, 81 j). 12, 45, 75 Answer: a). 18, 48 Factors of 18
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Playing with Numbers Exercise 3.1 1). Write all the factors of the following numbers: a). 24 b). 15 c). 21 d). 27 e). 12 f). 20 g). 18 h). 23 i). 36 Answers: a). 24 24= 1 X 24 24 = 2 X 12 24 = 3 X 8 24 = 4
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Whole Numbers Exercise 2.3 1). Which of the following will not represent zero. a). 1+0 b). 0 X 0 c). 0/2 d). (10-10)/2 Answer: a. 2). If the product of two whole numbers is zero, can we say that one or both of them will be zero? Justify through examples. If the product of
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Knowing Our Numbers Problems for Practice Q 1). Estimate each of the following using a general rule. a). 730 + 998 b). 796 – 314 c). 12,901 + 2,888 d). 28.292 – 21,496 Make ten more examples of addition, subtraction and estimation of their outcome. a). 730 + 998 Estimation: 700 + 1000
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Knowing Our Numbers Exercise 1.2 1). A book exhibition was held for four days in a school. The number of tickets sold at the counter on the first, second, third and final day was respectively 1094, 1812, 2050 and 2751. Find the total number of tickets sold on all four days. The number of tickets
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