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Elapsed Time

Grade 3 · Measurement · Worksheet 1

  1. Emma's family is driving to visit her grandparents. They left their house at 8:15 AM and arrived at 11:45 AM. How many minutes did the car trip take? Answer: ______________
  2. Noah's school field trip to the science museum started at 9:30 AM. The bus ride to the museum took 45 minutes. After exploring the museum for 2 hours and 15 minutes, they took the same 45-minute bus ride back to school. What time did Noah return to school? Answer: ______________
  3. Noah's school field trip to the science museum started at 9:30 AM. The bus ride took 2 hours and 15 minutes to get there. What time did Noah arrive at the science museum? Answer: ______________
  4. A rectangular swimming pool is drawn with a length of 120 meters and a width of 75 meters. What is the total distance around the outside edge of the pool?
    Answer: ______________
  5. A rectangular garden is drawn with a length of 85 meters and a width of 40 meters. What is the total distance around the entire garden?
    Answer: ______________
  6. Lily started reading her book at 2:15 PM. She finished reading at 3:45 PM. How many minutes did Lily spend reading her book? Answer: ______________
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Answer Key & Explanations

Elapsed Time · Grade 3 · Worksheet 1

  1. Emma's family is driving to visit her grandparents. They left their house at 8:15 AM and arrived at 11:45 AM. How many minutes did the car trip take? Answer: 210 Solution: Find the total time from 8:15 AM to 11:45 AM. From 8:15 AM to 11:15 AM is 3 hours. From 11:15 AM to 11:45 AM is 30 minutes.
    Full step-by-step solution

    Step 1: Find the total time from 8:15 AM to 11:45 AM. Step 2: From 8:15 AM to 11:15 AM is 3 hours. Step 3: From 11:15 AM to 11:45 AM is 30 minutes. Step 4: Convert 3 hours to minutes: 3 × 60 = 180 minutes. Step 5: Add the remaining minutes: 180 + 30 = 210 minutes. The car trip took 210 minutes.

  2. Noah's school field trip to the science museum started at 9:30 AM. The bus ride to the museum took 45 minutes. After exploring the museum for 2 hours and 15 minutes, they took the same 45-minute bus ride back to school. What time did Noah return to school? Answer: 1:15 PM Solution: 45 minutes (to museum) + 45 minutes (back from museum) = 90 minutes Convert 90 minutes to hours and minutes 90 minutes = 1 hour and 30 minutes 1 hour 30 minutes (bus) + 2 hours 15 minutes (museum) = 3 hours 45 minutes total 9:30 AM + 3 hours = 12:30 PM 12:30 PM + 45 minutes = 1:15 PM Noah…
    Full step-by-step solution

    Step 1: Calculate the total time spent on bus rides 45 minutes (to museum) + 45 minutes (back from museum) = 90 minutes Step 2: Convert 90 minutes to hours and minutes 90 minutes = 1 hour and 30 minutes Step 3: Add the museum exploration time 1 hour 30 minutes (bus) + 2 hours 15 minutes (museum) = 3 hours 45 minutes total Step 4: Add the total time to the starting time 9:30 AM + 3 hours = 12:30 PM 12:30 PM + 45 minutes = 1:15 PM Noah returned to school at 1:15 PM.

  3. Noah's school field trip to the science museum started at 9:30 AM. The bus ride took 2 hours and 15 minutes to get there. What time did Noah arrive at the science museum? Answer: 11:45 AM Solution: Start with the departure time: 9:30 AM Add the hours first: 9:30 AM + 2 hours = 11:30 AM Add the minutes: 11:30 AM + 15 minutes = 11:45 AM The answer is 11:45 AM
    Full step-by-step solution

    Step 1: Start with the departure time: 9:30 AM Step 2: Add the hours first: 9:30 AM + 2 hours = 11:30 AM Step 3: Add the minutes: 11:30 AM + 15 minutes = 11:45 AM Step 4: The answer is 11:45 AM

  4. A rectangular swimming pool is drawn with a length of 120 meters and a width of 75 meters. What is the total distance around the outside edge of the pool? Answer: 390 meters Solution: The distance around a rectangle is called the perimeter. The formula for perimeter of a rectangle is: Perimeter = 2 × (length + width) Substitute the given values: Perimeter = 2 × (120 + 75) Calculate inside the parentheses: 120 + 75 = 195 Multiply by 2: 2 × 195 = 390 The total distance around…
    Full step-by-step solution

    Step 1: The distance around a rectangle is called the perimeter. Step 2: The formula for perimeter of a rectangle is: Perimeter = 2 × (length + width) Step 3: Substitute the given values: Perimeter = 2 × (120 + 75) Step 4: Calculate inside the parentheses: 120 + 75 = 195 Step 5: Multiply by 2: 2 × 195 = 390 Step 6: The total distance around the pool is 390 meters.

  5. A rectangular garden is drawn with a length of 85 meters and a width of 40 meters. What is the total distance around the entire garden? Answer: 250 Solution: We are asked to find the total distance around the entire garden. This means we need the perimeter of the rectangle. Perimeter = 2 × (length + width) Substitute the given values into the formula.
    Full step-by-step solution

    We are asked to find the total distance around the entire garden. This means we need the **perimeter** of the rectangle. Step 1: Recall the formula for the perimeter of a rectangle. Perimeter = 2 × (length + width) Step 2: Substitute the given values into the formula. Length = 85 meters Width = 40 meters Perimeter = 2 × (85 + 40) Step 3: Add the length and width. 85 + 40 = 125 Step 4: Multiply by 2. 2 × 125 = 250 Step 5: State the final answer with units. The total distance around the garden is 250 meters. ANSWER: 250

  6. Lily started reading her book at 2:15 PM. She finished reading at 3:45 PM. How many minutes did Lily spend reading her book? Answer: 90 Solution: Identify the start and end times. Start time: 2:15 PM End time: 3:45 PM Calculate the number of hours from 2:15 PM to 3:15 PM. From 2:15 PM to 3:15 PM is exactly 1 hour.
    Full step-by-step solution

    Step 1: Identify the start and end times. Start time: 2:15 PM End time: 3:45 PM Step 2: Calculate the number of hours from 2:15 PM to 3:15 PM. From 2:15 PM to 3:15 PM is exactly 1 hour. 1 hour = 60 minutes. Step 3: Calculate the additional minutes from 3:15 PM to 3:45 PM. From 3:15 PM to 3:45 PM is 30 minutes. Step 4: Add the minutes together. 60 minutes (from step 2) + 30 minutes (from step 3) = 90 minutes. Step 5: Conclusion. Lily spent 90 minutes reading her book.