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Solution for Exercise 4 Page 74 Math 4 Workbook
Problem:
The school plans to install light bulbs in 32 classrooms, with each room having 8 bulbs. If each light bulb costs 3500 Vietnamese dong, how much money does the school have to pay to buy enough light bulbs for all classrooms?
Solution Method:
- Given conditions: 32 classrooms, 8 light bulbs/1 classroom, cost per light bulb is 3500 VND
- Problem statement: Calculate the amount of money to buy light bulbs for all 32 classrooms
- Solution Steps:
+ Step 1: Calculate the number of light bulbs needed for 32 classrooms, by multiplying the number of light bulbs used for 1 classroom by 32
+ Step 2: Calculate the amount of money to buy light bulbs for all 32 classrooms, by multiplying the cost of 1 bulb by the number of light bulbs needed for 32 classrooms.
Answer:
Method 1:
Number of light bulbs needed for 32 classrooms:
8 x 32 = 256 (bulbs)
Amount of money to buy light bulbs for all 32 classrooms:
3500 x 256 = 896000 (VND)
Answer: 896000 VND
Method 2:
Amount of money to buy light bulbs for each classroom:
3500 x 8 = 28,000 (VND)
Amount of money to buy light bulbs for the entire school:
28,000 x 32 = 896000 (VND)
Answer: 896000 VND
Part solving exercises page 74 math 4, Practice consists of 4 exercises. Moving on to the solution of exercise 4 on page 74 of Math 4 workbook. Mytour provides suggested answers and detailed solution methods for Solving Exercise 1 Page 74 Math 4, Solving Exercise 2 Page 74 Math 4, Solving Exercise 3 Page 74 Math 4, and Solving Exercise 5 Page 74 Math 4. Students need to grasp the knowledge of this lesson.
