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Guide to solving Grade 5 Math Page 133 (including solution methods)
1. Solve Exercise 1 - Grade 5 Math Page 133
Problem:
Calculate:
a) 23 minutes 25 seconds - 15 minutes 12 seconds;
b) 54 minutes 21 seconds - 21 minutes 34 seconds;
c) 22 hours 15 minutes - 12 hours 35 minutes.
Solution Method:
- Arrange vertically, align digits of the same place value.
- Perform subtraction as usual with whole numbers.
- Include corresponding units after the result.
- Note: When the smaller time unit can be converted to a larger one, convert it to the larger unit.
Or refer back to the instruction on how to set up the problems in the Solving Exercise 1 Page 135 Grade 5 Math Textbook.
2. Solve Exercise 2 - Grade 5 Math Subtracting Time Intervals Page 133
Problem:
Calculate:
a) 23 days 12 hours - 3 days 8 hours;
b) 14 days 15 hours - 3 days 17 hours;
c) 13 years 2 months - 8 years 6 months.
3. Solve Exercise 3 - Grade 5 Math Page 133
Problem:
A person leaves point A at 6:45 AM and arrives at point B at 8:30 AM. During the journey, the person takes a 15-minute break. Calculate the total time taken for the journey from A to B excluding the break time.
Solution Method:
- Given:
+ Departure from A: 6:45 AM.
+ Arrival at B: 8:30 AM.
+ Midway break: 15 minutes.
- Required: Calculate the time taken to travel from A to B (excluding break time).
- Approach: To calculate the time taken for the person to travel from A to B, subtract the departure time from the arrival time, then subtract the break time during the journey.
The answer to the problem is: 1 hour and 30 minutes.
Quick guide to solving 5th-grade Math, page 133.
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Above is the solution for 5th-grade Math problem on page 133. Students can review the solution for page 132 or preview the solution for page 134 to improve their Math skills.
