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Maths Assignment Class – IV Chapter - Geometry 1. Identify the following figures : a) b) c) d) e) f) g) h) 2, Draw the following angles : 650, 800, 1300, 450,1500 3. Fill in the blanks : (a) A whole angle is equal to ___________ . (b) An acute angle is ___________ than 900 (c ) 1800 is known as ___________ . (d) An ___________ triangle has two equal sides . (e) The sum of the angles of a triangle is ____________ (f) In an isosceles triangle the base angles are _________ . (g) The sum of all the angles of a quadrilateral is _________. (h) A quadrilateral has _________ sides . (i) A triangle has __________ angles . (j) An _________ triangle has three equal sides . Maths Assignment Class - VII Chapter – Algebraic Expression 1. Show the terms and factors of 5y3 + 3y2 + 6 by tree diagram . 2. Write the coefficient of x2 in (i) - x2 (ii) 6xy -4x2 – y2 + 5 3. Identify the like terms of each of the following : (i) 5xy, 4x2y2, 3xy, 2x2y, 10xy (ii) 4xy , -5x2y , -3yx , 3xy2 4. Add : 2x + 3y +z , 2x –y – z and - x + y 5. Subtract x2 – 3xy + 7y2 – 2 from 6xy -4x2 – y2 + 5 6. What should be subtracted from 2x3 -3x + 6 to get 4x2 –x + 2 ? 7. What should be added to a2 + 2ab + b2 to get 4ab + b2 8. From the sum of 4x2 – 6x + 3 and -4x2 – 7x + 5 subtract 3x2 – 8x +6 . 9. Find the value of n3 + 5n2 + 5n – 2 , when n = - 3 10. Find the value of a2 + ab + b2 for a = -3 , b = 2. 11. Simplify these expressions and find their values if x = 2 ,a = - 1 and b = 3 (i) 4 ( 2x – 1 ) + 2x + 10 (ii) 5a – 4b +2a – 3b + 6 12 . What are the coefficients of x in the following expression ? 4x – 3y , 8–x+y, y2x – y , 2z – 5xz