Сборник задач по подготовке учащихся к международным исследованиям timss и pisa
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Тимс,Пизаға дайындық
- Бұл бет үшін навигация:
- Task 12. Yields.
- Task 14. In a toy shop.
| Task 11. Ceiling painting.
Rectangular shape of the ceiling, sown in Figure 1, on the edges it is painted by green, and in the middle by white emulsion. Question 1. Find the surface width at the edges of it. Answer: ____________. Question 2. Find the surface area which is painted by white emulsion. Answer: ____________. Question 3. Find the surface area which is painted by green emulsion. Figure 1. 172 Task 12. Yields. Land of a rectangular shape with a width of 0.45 km and a length of 1.4 times larger is planted with rice. Question 1. What is the width of the land? Answer_________. Question 2. What is the area of the land? Answer_________. Question 3. How many hectares of rice was collected from this area when from one hectare was harvested x quintals? Answer_________. Task 13. Farm. There are 300 sheep in the farm . 5.1 kg of wool was cut from each sheep. After wool was washed, it has become easier in 1.2 kg. From 1 kg of pure wool can be made 0.7 m of fabric. Question 1: How many meters of fabric can be made from the wool of sheep farming? Question 2: On average, 205 meters of wool fabric needed for sewing dresses for an adult and 0.9 meters of wool fabric for sewing dresses for a teenage girl. The price for an adult dresses is10500 tenge, and 6700 tenge is for a teenager. Calculate economic benefits in tailoring each product, if the factory gets from the farmer not scoured wool at a price of 150 tenge per 1 kg, processing costs are 45% of the purchase price. Answer:__________________________________________________________ Task 14. In a toy shop. In the toy shop the following prices are presented for the different types of table games. Table 5. Toys types А В С D E F G Cost 1130 1500 030 920 850 4100 3250 Question 1: Find a numbers of the toys types the value of which does not exceed 1500 tenge. Answer:__________________________________________________________ Question 2: Father decided to get two little games, spending no more than 2500 tenge. Find a number of options for such a purchase. Answer:__________________________________________________________ Question 3. There are 20% discounts in the shop for every purchase in the case if the buyer gets three toys in a one time. Write down three toys which father can buy for his child. Answer:__________________________________________________________ |