Time Intervals: Word Problems

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Answer the word problems below. Highlight the important words and numbers. Remember to write you answer in a full sentence. Give answers in hours and minutes when greater than 60 minutes.

1. Jackson's favorite television starts at 3:30. If he gets home from school at 2:30, how long does he have until his show starts?
Jackson has 1 hour until his show starts.

2. Mrs. Morrison's math class starts at 11:30. If the class ends at 1:00, how long is Mrs. Morrison teaching?
How long from 11:30 until the next whole hour (12:00)? There are 30 minutes. How long between 12:00 and 1:00? 1 hour. Add these two intervals together to get 1 hour 30 minutes.
Mrs. Morrison teaches for 1 hour 30 minutes.

3. David has a lot of homework to do. He starts his reading homework at 3:45 and ends at 4:30. Then he does math from 4:30 until 5:00. Lastly, he studies for a science test from 5:00 - 5:30. How much total time did David spend on his homework and studying?
There are 3 different time intervals: 45 minutes, 30 minutes, and 30 minutes. Add the two 30 minute intervals to get 60 minutes which is 1 hour. Then add 45 minutes to get 1 hour 45 minutes.
David spends 1 hour 45 minutes on homework and studying.

4. Michelle exercises for half an hour every day. How minutes in total does she exercise for over 5 days?
Convert half an hour to minutes. There are 30 minutes in half and hour: 60 ÷ 2 = 30 minutes. Multiply to get the total over 5 days: 30 minutes/ day x 5 days = 150 minutes.
Michelle exercises for 150 minutes over 5 days.

5. It takes 3 hours to wash every window on a building. There are 30 windows. How many minutes does it take to wash each window?
Convert from hours to minutes. There are 60 minutes in each hour. 3 x 60 minutes = 180 minutes. Divide to find how long for each window: 180 minutes ÷ 30 windows = 6 minutes/ window.
Each window takes 6 minutes to wash.

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Related Resources

The various resources listed below are aligned to the same standard, (4MD02) taken from the CCSM (Common Core Standards For Mathematics) as the Word problems Worksheet shown above.

Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. Represent measurement quantities using diagrams such as number line diagrams that feature a measurement scale.


Area and Volume


Converting Metric Units

Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:

Solve problems involving measurement and conversion of measurements from a larger unit to a smaller unit


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