New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Pairs and Angles Self Practice 9C Solution (1) Using property of corresponding angles, find each of the lettered angles giving reasons. (2) Using the properties of adjacent angles, vertically opposite angles and corresponding angles, fill in the size of each angle in diagram. Solution Number […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Pairs and Angles Self Practice 9A Solution (1) What is measure of complement of 380 (2) What is measure of supplement of 170o (3) Tell whether the angles shown below are complementary, supplementary or neither. (4) For each angle in group A, find its complement […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8F Solution (1) 55 per cent of the students in a school are girls. What percentage of the students are boys? Find the number of students, if there are 216 boys. (2) If 10% is deducted from a bill, […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8E Solution (1) Ravi’s class has 19 boys and 12 girls. What is its percentage composition? (2) Chalk contains 10% calcium, 3% carbon and 12% oxygen. Find the amount of carbon and calcium (in grams) in 2 and 1/2 […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8D Solution (1) Increase: (a) Rs. 50 by 20% (b) Rs. 700 by 8% (c) 600 g by 18% (d) 4L by 15% (e) 8 km by 19% (f) 5 kg by 23% (2) Decrease: (a) Rs. 170 by […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8B Solution Find. (1) (a) 25% of 32 (b) 16-1/3% of 390 (c) 50% of 29 (d) 33-1/3% of 150 (e) 20% of 775 (f) 15% of 3000 (g) 28% of 1225 (h) 18% of 2650 (2) (a) 10% […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8A Solution (1) Express each of the following as a percentage. (a) (i) 1/5 (ii) ¾ (iii) 17/50 (iv) 11/20 (v) 2-9/10 (vi) 2-8/25 (b) (i) 0.3 (ii) 0.47 (iii) 0.89 (iv) 1.05 (v) 0.09 (vi) 0.769 (vii) 3 […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Powers and Exponents Self Practice 4B Solution (1) Multiply and write the product as one power. (a) 25 x 23 (b) 47 x 45 (c) 98 x 97 (d) 105 x 103 x 10 (e) (1/2)7 x (1/2)3 (f) (-7/9)11 x (-7/9)6 (g) (5/13)9 x […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Powers and Exponents Self Practice 4A Solution (1) Complete the table. One has been dome for you. Expression Base Exponent Meaning Value (a) 28 2 8 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 256 (b) (-12)3 […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Rational Numbers Self Practice 3G Solution Express each of the following rational numbers as a decimal. (1) (a) 3/20 (b) 11/-16 (c) 2~21/40 (d) 1/125 (e) -17~3/64 SOLUTION Number 1: (2) (a) 5/6 (b) -23/7 (c) -3/11 (d) 1~11/15 (e) 4~11/-13 (3) Express the following […]