Сборник задач по подготовке учащихся к международным исследованиям timss и pisa
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- Бұл бет үшін навигация:
- Task 12. Yields.
- Task 14. In a toy shop.
| Task 11. Ceiling painting.
Rectangular shape of the ceiling, depicted in Figure 1, on the edges is painted by green, and in the middle by white emulsion. Question 1. Find the surface width at the edges of. Answer: ____________. Question 2. Find the surface area painted by white emulsion. Answer: ____________. Question 3. Find the surface area of the shaded by green emulsion. Figure 1. 171 Task 12. Yields. Land is of rectangular shape with a width of 0.45 km and a length of 1.4 times larger, planted rice. Question 1. What is the width of the land? Answer_________. Question 2. What is the area of land? Answer_________. Question 3. How many quintals of rice collected from this area when from one hectare was harvested x quintals? Answer_________. Task 13. Farm. In the farm 300 sheep. With each sheep was shear off 5.1 kg of wool. After wool washed, it has become easier to 1.2 kg. From 1 kg of pure wool can be woven 0.7 m of fabric. Question 1: How many meters of fabric can be woven from the wool of sheep farming? Question 2: On average, need 205 meters of wool fabric for sewing dresses for an adult and 0.9 meters of wool fabric for sewing dresses for a teenage girl. The cost for an adult dresses 10500 tenge, and 6700 tenge is for a teenager. Calculate economic benefits in tailoring each product, if the factory purchase 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 presented the following prices 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 but 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 buyer is buying three toys in a one time. Write down every three toys father can buy to his child. Answer:__________________________________________________________ |