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Elapsed Time

Grade 3 · Measurement · Worksheet 2

  1. 125 ÷ 5 = ? Answer: ______________
  2. Aroha starts her piano lesson at 9:15 AM. The lesson lasts for 1 hour and 50 minutes. What time does the lesson end? Answer: ______________
  3. A rectangular swimming pool is drawn with a length of 65 meters and a width of 30 meters. What is the total distance around the outside edge of the pool?
    Answer: ______________
  4. Emma's family is driving to visit her grandparents. They left home at 8:15 AM and arrived at their destination at 11:45 AM. How many minutes did the car trip take? Answer: ______________
  5. Liam's soccer practice started at 3:45 PM and ended at 5:15 PM. How many minutes did Liam's soccer practice last? Answer: ______________
  6. A farmer harvested 324 apples in the morning and 487 apples in the afternoon. How many apples did the farmer harvest in total? Answer: ______________
  7. Liam's school field trip to the science museum started at 9:30 AM. The bus ride to the museum took 1 hour and 15 minutes. How many minutes was the bus ride? Answer: ______________
  8. Lily started reading her book at 2:15 PM. She read for 45 minutes. What time did she finish reading? Answer: ______________
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Answer Key & Explanations

Elapsed Time · Grade 3 · Worksheet 2

  1. 125 ÷ 5 = ? Answer: 25 Solution: We are dividing 125 into 5 equal groups. We want to find how many are in each group. Start with the largest place value.
    Full step-by-step solution

    Let's solve 125 ÷ 5 step by step. Step 1: Understand the problem. We are dividing 125 into 5 equal groups. We want to find how many are in each group. Step 2: Start with the largest place value. Look at the first digit of 125, which is 1 (from the hundreds place, so it's 100). Ask: How many groups of 5 can we make from 1? None, because 5 is larger than 1. So we must look at the first two digits: 12 (which is 12 tens, or 120). Step 3: Divide 12 by 5. 5 times what number is close to 12? 5 × 2 = 10. This fits, because 10 is less than 12. Write down 2. This 2 is for the tens place, so it represents 20. Step 4: Subtract and bring down. 12 - 10 = 2. Now bring down the next digit from 125, which is 5. This makes 25. Step 5: Divide 25 by 5. 5 times what number equals 25? 5 × 5 = 25. Write down 5. This 5 is for the ones place. Step 6: Combine the results. We wrote down 2 (tens) and then 5 (ones). This gives 25. Step 7: Check the answer. Multiply the result by the divisor: 25 × 5 = 125. This matches the original number, so the division is correct. Final Answer: 25

  2. Aroha starts her piano lesson at 9:15 AM. The lesson lasts for 1 hour and 50 minutes. What time does the lesson end? Answer: 11:05 AM Solution: Start time is 9:15 AM. Add the hours first: 9:15 AM + 1 hour = 10:15 AM. Now add the 50 minutes: 10:15 AM + 50 minutes = 10:65 AM.
    Full step-by-step solution

    Step 1: Start time is 9:15 AM. Add the hours first: 9:15 AM + 1 hour = 10:15 AM. Step 2: Now add the 50 minutes: 10:15 AM + 50 minutes = 10:65 AM. Step 3: Since 65 minutes is more than 60, we convert: 65 minutes = 1 hour and 5 minutes. Step 4: Add that extra hour: 10:65 AM becomes 11:05 AM. The lesson ends at 11:05 AM.

  3. A rectangular swimming pool is drawn with a length of 65 meters and a width of 30 meters. What is the total distance around the outside edge of the pool? Answer: 190 meters Solution: The formula for the perimeter (distance around) a rectangle is: Perimeter = 2 × length + 2 × width Substitute the given values: Perimeter = 2 × 65 + 2 × 30 Calculate 2 × 65 = 130 Calculate 2 × 30 = 60 Add the results: 130 + 60 = 190 Include the unit: 190 meters The total distance around the…
    Full step-by-step solution

    Step 1: The formula for the perimeter (distance around) a rectangle is: Perimeter = 2 × length + 2 × width Step 2: Substitute the given values: Perimeter = 2 × 65 + 2 × 30 Step 3: Calculate 2 × 65 = 130 Step 4: Calculate 2 × 30 = 60 Step 5: Add the results: 130 + 60 = 190 Step 6: Include the unit: 190 meters The total distance around the outside edge of the pool is 190 meters.

  4. Emma's family is driving to visit her grandparents. They left home at 8:15 AM and arrived at their destination at 11:45 AM. How many minutes did the car trip take? Answer: 210 Solution: Calculate the time from 8:15 AM to 11:15 AM. This is exactly 3 hours. Convert 3 hours to minutes: 3 hours × 60 minutes/hour = 180 minutes.
    Full step-by-step solution

    Step 1: Calculate the time from 8:15 AM to 11:15 AM. This is exactly 3 hours. Step 2: Convert 3 hours to minutes: 3 hours × 60 minutes/hour = 180 minutes. Step 3: Add the extra time from 11:15 AM to 11:45 AM: 11:45 - 11:15 = 30 minutes. Step 4: Add both parts together: 180 minutes + 30 minutes = 210 minutes. The car trip took 210 minutes.

  5. Liam's soccer practice started at 3:45 PM and ended at 5:15 PM. How many minutes did Liam's soccer practice last? Answer: 90 Solution: From 3:45 PM to 4:45 PM is 60 minutes (1 hour). From 4:45 PM to 5:15 PM is 30 minutes (5:15 - 4:45 = 0:30). Add the two time periods: 60 minutes + 30 minutes = 90 minutes.
    Full step-by-step solution

    Step 1: From 3:45 PM to 4:45 PM is 60 minutes (1 hour). Step 2: From 4:45 PM to 5:15 PM is 30 minutes (5:15 - 4:45 = 0:30). Step 3: Add the two time periods: 60 minutes + 30 minutes = 90 minutes. The answer is 90.

  6. A farmer harvested 324 apples in the morning and 487 apples in the afternoon. How many apples did the farmer harvest in total? Answer: 811 Solution: The farmer harvested 324 apples in the morning The farmer harvested 487 apples in the afternoon Add the morning and afternoon amounts: 324 + 487 First add the ones place: 4 + 7 = 11 (write down 1, carry over 1) Add the tens place: 2 + 8 = 10, plus the carried over 1 = 11 (write down 1, carry…
    Full step-by-step solution

    Step 1: The farmer harvested 324 apples in the morning Step 2: The farmer harvested 487 apples in the afternoon Step 3: Add the morning and afternoon amounts: 324 + 487 Step 4: First add the ones place: 4 + 7 = 11 (write down 1, carry over 1) Step 5: Add the tens place: 2 + 8 = 10, plus the carried over 1 = 11 (write down 1, carry over 1) Step 6: Add the hundreds place: 3 + 4 = 7, plus the carried over 1 = 8 Step 7: The total is 811 The answer is 811.

  7. Liam's school field trip to the science museum started at 9:30 AM. The bus ride to the museum took 1 hour and 15 minutes. How many minutes was the bus ride? Answer: 75 Solution: There are 60 minutes in 1 hour The bus ride took 1 hour and 15 minutes Convert 1 hour to minutes: 1 × 60 = 60 minutes Add the additional 15 minutes: 60 + 15 = 75 minutes The bus ride was 75 minutes long
    Full step-by-step solution

    Step 1: There are 60 minutes in 1 hour Step 2: The bus ride took 1 hour and 15 minutes Step 3: Convert 1 hour to minutes: 1 × 60 = 60 minutes Step 4: Add the additional 15 minutes: 60 + 15 = 75 minutes Step 5: The bus ride was 75 minutes long

  8. Lily started reading her book at 2:15 PM. She read for 45 minutes. What time did she finish reading? Answer: 3:00 PM Solution: Identify the starting time. Lily started reading at 2:15 PM. Identify the duration she read.
    Full step-by-step solution

    Step 1: Identify the starting time. Lily started reading at 2:15 PM. Step 2: Identify the duration she read. She read for 45 minutes. Step 3: Add the minutes to the starting time. 2:15 PM + 45 minutes = 2:15 + 45 min. Step 4: Break down the addition. First, add minutes: 15 minutes + 45 minutes = 60 minutes. Since 60 minutes = 1 hour, we convert the 60 minutes into 1 hour. Step 5: Add the 1 hour to the hours. 2 hours + 1 hour = 3 hours. Step 6: Combine hours and minutes. After adding, the time is 3:00 PM. Step 7: Final answer. Lily finished reading at 3:00 PM.