# VII CLASS – MATHEMATICS : UNDERSTANDING MATHEMATICAL CONCEPTS TEST

May 19th, 2015
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1. The area of the square field is 1296 sq.mts Find the cost of fencing it at the rate of Rs 7.50 per meter. 2. Find the value of A – B – C A = 4 x3 + 3 x2 – 2x – 1 B = 4 x3 – 3 x2 + 2x + 1 C = - 4 x3 – 3 x2 + 2x +1

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VII CLASS MATHEMATICSTime: 2 HrsPART A & BTotal Marks: 100----------------------------------------------------------------------------------------------------------------Time: 2 Hrs PART AMarks: 80----------------------------------------------------------------------------------------------------------------Answer two from each section[ 4 6 = 24 ]I Understanding Mathematical ConceptsSection A1. The area of the square field is 1296 sq.mts Find the cost of fencing it at the rate of Rs 7.50 per meter.2. Find the value of A B CA = 4 x3 + 3 x2 2x 1 B = 4 x3 3 x2 + 2x + 1C = - 4 x3 3 x2 + 2x +13. Find the value ofi. ( )4 ( )5 () 2 = ?ii. () 4 ( ) 5 () 2 = ?Section B4. Find the product and verify the results for the value given of the following: 8 x3 4 x + 3 x2 + 7 and 2 x2 when x = 15. Write the properties of trapezium and parallelogram?6. = + Make f as subject of formula and solve the formula when u = 4 cm & v = 3cmII Problem Solving: Different Methods[ 4 6 = 24 ]Section A7. Compute the following:i. ii. iii. 8. What is the product of:i. ( x + 2y ) ( 2x y ) ii. ( x y ) ( 2x + 3 y)9. Find the value of x2 + if x + = 310. Solve and check i. + = 5Section B11. The angles of a triangle are in the ratio 3 : 4 : 5. The largest side is 7.2 cm. Construct the triangle.12. In a quadrilateral, the angles are x, ( x+10 ) , ( x+20),

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