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VII Forests- Our Life Line Download VII Nutrition in Animals Download VII Nutrition in Plants Download VII Reproduction in Plants Download VII Respiration in Organisms Download VII Transportation in Animals and Plants Download More related link: VII SCIENCE Nutrition in Plants Nutrition in Animals (I)Fiber to Fabric (II) Fibre more to Know Heat and temperature Acids Bases and Salts 1 Physical and Chemical Changes Weather and Climate (I) Soil (II) Notes Respiration in Organisms Transportation in Plants and Animals Reproduction in Plants (I)Motion and Time Questions (II)Notes Profit and Loss Assignment VII MathematicsThe terms profit and loss are used in business transactions. A merchant buys goods at a price to sell to customers. The price at which he/she buys the goods is its cost price (C.P.). He/She sells the goods at a price to the customer, which is known as the selling price (S.P.).
The difference between the selling price and the cost price determines the profit or loss the merchant makes. If S.P. > C.P., the merchant makes a profit of (S.P. – C.P.). If S.P. < C.P., the merchant makes a loss of (C.P. – S.P.). However, it is not enough to merely know the actual value of profit/loss – it is important to consider the size of profit/loss in proportion to the cost of the goods. For this reason, profit/loss is often determined as a percentage of the cost price. 1. By selling an article for Rs.144,A man loses 1/7 of his outlay. If it is sold for Rs189what is the gain or loss percent 2. A tricycle is sold at a gain of 15% .Had it been sold for Rs 27 more, the profit would have been 20% find the cost price. 3. If manufacture gains 10%, the wholesale dealer 15%, and the retailer 25%. Than what is the production cost of a washing machine whose retail price Rs 3795. 4. Mr. Mehta purchased a video for Rs 18000 and a television for Rs 10500. On the video he lost 5% and on the television he gained 17%. Find his total gain or loss percent? 5. Three chairs are purchase for Rs 450 each. One of them is sold at a loss of 10% At what price should the other two be sold as to gain 20% on the whole transaction. 6. Prem buys equal quantities of two kinds of lemons at the rate of 6 for a rupee and 9 for a rupee. He mixes them together and sells the whole lot at 8 fore rupee. Find his gain or loss percent? 7. By selling a rickshaw for Rs2640, Ghanshyam loses 12%. For how much should he sell it to gain 12%? 8. A electrician sells a room heater for Rs. 322 getting 1/6th of it cost price. Find his gain percent. 9 A dealer bought 100 Cricket bats For Rs 40 each. He sells 20 of them at a gain of 5%. At what gain per cent must he sell the remainder So as to gain 20% on the whole? 10 A man sold two radios at Rs 924 each. On one he gain 20% and the other he loss 20%. How much does he gain or lose in the whole transaction. Also find the gain or loss percent in the whole transaction. 11. The selling price of 12 pen is equal to the cost price of 15 pens. Find gain or loss %? 12. By selling 36 oranges a vendor losses equal to the selling price of 4 oranges .find his loss% 13. A shopkeeper brought toffee 6 for a rupee. Hoe many for a rupee must he sell to gain 20% ? 15. By selling 33 m of cloth, a draper loses an amount equal to the selling price of 3m of cloth. Find his gain or loss per cent? http://jsuniltutorial.weebly.com/mathematics.html WORKSHEET VII Simple Linear Equation I. SOLVE (i) 7y + 5 = 19 ( y = 2 ) (ii) (3k + 9)/8 = 5 ( k = 7 ) (iii) a + 5 = 11 ( a = 6 ) (iv) 12a + 4 = 40 ( a = 3 ) (v) 2x/4 = 11 ( x = 22 ) (vi) 3m/7 = 9 ( m = 21 ) (vii) 2a – 4 = 6 ( a = 5 ) (viii) 4 (x + 3 ) = 20 ( x = 2 ) (ix) 8x - 5 = 2 + 19 ( x = 4 ) (x) 2m/7 + 6 = 10 ( m = 14 ) (xi) 3 ( 2x - 1 ) + 5 = 14 ( x = 2 ) (xii) 2z – ( 7 – 5z ) – 21 = 0 ( z = 4 ) (xiii) 8x/3 + 4 = 12 ( x = 3 ) (xiv) 3 ( y – 1 ) = 2 ( 2y – 6 ) ( y = 11 ) (xv) 5 – 6 ( - 2 ) + 13 = 6 ( x = -4 ) II. Set up equations and solve. (i) Add 7 to 3times a number, you get 34. Find the number. ( x = 9 ) (ii) Subtract 23 from thrice a number the result is 7.find the number. ( x = 10 ) (iii) Anmol’s mother is 4 years more than 3times Anmol’s age. Find Anmol’s age if mother is 40 years old. (iv) Tony scored twice as many runs as Kohli. Together they scored 6 short of triple century. How many runs did each score? ( 196, 98 ). (v) The three angles of a triangle are in the ratio 2:3:5. Find the measure of each angle. Classify the triangle ( 36, 54, 90 ) . (right angled triangle). 7th_cbse_sample_paper_chapter_simple_interest Download File 7th_Profit_loss__simple_interest Download File 7th_maths_percentage_cbse_test_paper-1 Download File 7th_maths_percentage_cbse_test_paper-2 Download File Educational link by jsunil tutorial 7th math's Term-I 7th math's Term-II CBSE Class VII Science 7th Science CBSE Practice Test paper 7th Science CBSE Solved Test paper CLASS- VII; CHAPTER-10 (SOIL)
1. How does temperature act as an agent of physical weathering? 2. What are the major components of soil? 3. How does air act as the agents of weathering? 4. Plants and animals being the living organisms act as the agent of physical weathering. How? 5. Discuss the various horizons of soil profile. 6. On the basis of soil texture, soil is divided in to how many categories? 7. Define the terms : i. Eluviations ii. Soil density iii. Plasticity iv. cohesion 8. Why are the earthworms known as nature’s ploughmen? 9. What is vermi-composting and how is it formed? 10. Compare the various properties of loamy soil, sandy soil & clayey soil. 11. Why does sandy soil need frequent irrigation? 12. What is soil profile? 13. How does water helps in weathering of rocks? 14. How is humus important for plants? 15. Why does soil of different areas differ in colour? 16. Which soil is considered best for the growth of plants? Why? 17. What are the different factors that affect the soil? 18. Differentiate between top soil and sub soil? 19. What are the different reasons for soil erosion? 20. We can make mud balls with clayey soil but not with sand. Why? LESSON - 8 (TRANSPORTATION IN PLANTS) 1. Explain structure and functioning of heart. 2. What are the various functions of blood? 3. How does skin act as excretory organ in humans? 4. Define the terms: a) Systole b) Diastole 5. What are the excretory organs in human? What are their functions? 6. What are the various organs consisting a circulatory system of an organism? 7. What are two processes responsible for transportation in organisms? 8. What are the conducting tissues of plant and why they are called as vascular tissues? 9. Make a diagram showing transpiration in plants. 10. Why is the outer wall of red blood cell flexible ? L-9 (REPRODUCTION IN PLANTS) 1. Define the terms: a. Reproduction b. Pollination c. Fertilization d. Vegetative reproduction 2. What is asexual reproduction? What are its various methods? 3. What are pollinators? Give examples. 4. Explain vegetative reproduction through leaves with example. 5. What are the characters of pollen grains? 6. What are the harmful effects of vegetative propagation? 7. How are the seeds dispersed by wind? 8. Why is apple termed as false fruit? 9. Explain the process of dispersal of fruits by explosion. 10. What is the difference between unisexual and bisexual flowers? 11. What do you understand by corms in plants? Give examples of such plants in which corms are found. 12. What is the special feature of the following seed which is helpful in their dispersal: a. Seeds of drumstick b. Seeds of Madar c. Seeds of Xanthium and Urena CLASS-VII ; LESSON - 5 (HEAT) 1. Explain why a stone feels very cold to bare feet in winters but a carpet in the same room feels warmer? 2. Why is digital thermometer preferred over mercury thermometer now a days? 3. Why is the box of solar cookers painted black from inside? 4. A metal ball just passes through a metal ring at room temperature. On heating the same metal ball does not passes through the ring. Explain why? 5. Why are ice boxes made as double walled? 6. What is radiant energy? What happens to it when it falls on any matter? 7. Why do houses have light colors on outer walls? 8. Why do firemen use shining brass caps? 9. Why do buildings have coated shining glass as their outer walls? 10. What is meant by land breeze? 11. When does the flow of heat from a hot object to a cold object stops? 12. Why is it better to wear dark clothes in winter? 13. What do you understand by normal human body temperature? 14. We want to keep cold water cold for long time in a container. State whether the container should be painted white or black from outside. Give reason. 15. Define the different methods of transfer of heat. 16. Why does the heat of the sun not reach us by conduction or by convection? 17. Name the two scales on which the temperature is measured. 18. Why do water pipes sometimes burst at very cold places? 19. Does the heat cause any chemical change? Give example. 20. What is the role of bricks and mud in keeping our houses cool? |
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