Basic Geometrical Ideas Exercise 4.1 1). Use the figure to name a). Five points b). A line c). Four rays d). Five line segments Answer: a). Five points B, O, E, D, C. b). A line There are many possible answers. For example line DE, line DB, line DO, line EB, etc. […]
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Playing with Numbers Exercise 3.5 1). Which of the following statements are true? (a) If a number is divisible by 3, it must be divisible by 9. (b) If a number is divisible by 9, it must be divisible by 3. (c) A number is divisible by 18 if it is divisible by
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Playing with Numbers Exercise 3.4 1). Find the common factors of : (a) 20 and 28 Factors of 20 = 1, 2, 4, 5, 10, 20 Factors of 28 = 1, 2, 4, 7, 14, 28 Common factors = 1, 2, 4 (b) 15 and 25 Factors of 15 = 1, 3, 5, 15 Factors
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Playing with Numbers Exercise 3.3 1). Using divisibility tests, determine which of the following numbers are divisible by 2; by 3; by 4; by 5; by 6; by 8; by 9; by 10 ; by 11 (say, yes or no): Number 2 3 4 5 6 8 9 10 11 128 990 1586
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How Many Squares? Page 34 Measure the side of the square on dotted sheet. Draw as many rectangles as possible using 12 such squares. How many rectangles could you make? We can make 7 right angles. Which of these rectangles has the longest perimeter? Rectangles 1 and 2 have the longest perimeter. Which of these
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Whole Numbers Exercise 2.1 1). Write the next three natural numbers after 10999. The next three natural numbers after 10999 are 11000, 11001 and 11002. 2). Write the three whole numbers occurring just before 10001. The three whole numbers occurring just before 10001 are 10000, 9999, 9998. 3). Which is
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The Fish Tale Page 1 Do you know any poems about fish? When you think of fishes what shapes come to your mind. As I think of fishes shapes like circle, oval, triangle comes to my mind. Try to use a square and a triangle to draw a fish. Page 2 Fishes can have
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