Objective: I know how to add and subtract time.

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Solve the following:

a) 3 minutes 35 seconds + 4 minutes 40 seconds
= min sec

b) 5 hours 46 minutes + 3 hours 45 minutes
= hours min

c) 3 weeks 2 days + 5 weeks 8 days
= weeks days

d) 3 years 6 months + 8 years 7 months
= years month

e) 6 minutes 7 seconds – 4 minutes 10 seconds
= min sec

f) 5 hours 6 minutes – 3 hours 9 minutes
= hr min

a) 12 weeks 4 days – 8 weeks 6 days
= weeks days

b) 7 years 8 months – 5 years 10 months
= year months

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You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

We hope that the free math worksheets have been helpful. We encourage parents and teachers to select the topics according to the needs of the child. For more difficult questions, the child may be encouraged to work out the problem on a piece of paper before entering the solution. We hope that the kids will also love the fun stuff and puzzles.