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Explore the document for solving Grade 5 math problems Workbook 2, Practice, Exercise 125 to effectively complete exercises 1, 2, 3, and 4 in the exercise book, reinforcing knowledge and practicing addition, subtraction of time measurements to solve related problems easily and efficiently.
Solving Grade 5 math problems Workbook 2, Practice, Exercise 125
1. Solution for Exercise 1 - Math Workbook Grade 5 Exercise 2 Page 53
Task Description:
Fill in the blanks with appropriate measurements:
Solution Approach:
Apply the conversion method: 1 hour = 60 minutes; 1 minute = 60 seconds.
Answer Key:
2. Solution for Exercise 2 - Math Workbook Grade 5 Exercise 2 Page 53
Task Description:
Set up the calculation and then compute:
a) Addition: 6 years 7 months + 4 years 5 months
b) Summation: 10 hours 37 minutes + 5 hours 38 minutes
c) Combining: 26 days 7 hours + 8 days 15 hours
d) Adding: 26 minutes 35 seconds + 46 minutes 50 seconds
Solution Approach
- Arrange the numbers in a column and perform addition as with natural numbers.
- After each calculation, record the corresponding unit of measurement.
- If the time measurement unit is small and can be converted to a larger unit, perform the conversion to the larger unit.
Answer Key
3. Solution for Exercise 3 - Math Workbook Grade 5 Exercise 2 Page 53
Task Description:
Set up the calculation and then compute:
a. Subtraction: 30 years 2 months - 8 years 8 months
b. Subtracting: 42 days 7 hours - 8 days 9 hours
c. Difference: 21 hours 12 minutes - 7 hours 17 minutes
d. Deducting: 15 minutes 23 seconds - 7 minutes 30 seconds
Solution Approach
- Arrange the numbers in a column and perform subtraction as with natural numbers.
- After each calculation, record the corresponding unit of measurement.
- If the measurement unit in the minuend is smaller than that in the subtrahend, convert 1 larger adjacent unit to 1 smaller unit, then proceed with subtraction as usual.
Answer
4. Solution for Exercise 4 - Math Workbook Grade 5 Exercise 2 Page 54
Task Description:
A worker completes 3 machine parts in 5 hours and 30 minutes. The first part takes 1 hour and 30 minutes, and the second takes 1 hour and 40 minutes. How long does it take to complete the third part?
Solution Approach
- Find the total time required for the first and second machine parts.
- Time taken for the third machine part = total time taken for all three machine parts - total time taken for the first and second machine parts.
Answer
Time taken for machine parts 1 and 2 is:
1 hour 30 minutes + 1 hour 40 minutes = 3 hours 10 minutes
Time taken for machine part 3 is:
5 hours 30 minutes - 3 hours 10 minutes = 2 hours 20 minutes
Answer: 2 hours 20 minutes.
You are currently viewing the guide for solving Grade 5 math problems on pages 53 and 54 of Workbook 2 Practice 125. You can review the guide on Solving Grade 5 math problems on pages 51 and 52 of Workbook 2 Subtracting time measurements or preview the guide on Solving Grade 5 math problems on page 55 of Workbook 2 Multiplying time measurements by a number to understand the lesson better.
Wishing you all the best in learning mathematics.
