Mathematics Grade 1 15 min

Time and clocks: word problems

Time and clocks: word problems

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1

Introduction & Learning Objectives

Learning Objectives Read an analog clock to the hour. Identify the short hour hand and long minute hand. Solve simple word problems about time. Add 1, 2, or 3 hours to a given time. Subtract 1, 2, or 3 hours from a given time. Draw the hands on a clock to show a time. Understand time words like 'before' and 'after'. What time do you go to bed? 😴 Let's learn how to tell time with clocks! We will learn to read clocks and solve fun time stories. This helps us know when things happen all day long. Real-World Applications Knowing when school starts 🏫 Knowing when it is time for lunch 🍎 Knowing when your favorite TV show is on 📺 Knowing when it is bedtime 🌙
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Key Concepts & Vocabulary

TermDefinitionExample Analog Clock 🕰️A clock with hands that move around to show the time.The big clock on the classroom wall is an analog clock. Hour HandThe short, little hand on the clock. It points to the hour.If the short hand points to 3, it is 3 o'clock. Minute HandThe long, big hand on the clock. It tells us the minutes.When the long hand points to 12, it is a new hour. O'clockThe word we say for the exact hour. The long hand is on 12.When the short hand is on 7 and the long hand is on 12, it is 7 o'clock. AfterA time that comes later. We add hours.2 hours after 4 o'clock is 6 o'clock. BeforeA time that came earlier. We subtract hours.1 hour before 9 o'clock is 8 o'clock.
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Core Formulas

Finding a Later Time ➡️ Start Time + Hours = End Time Use this when the story asks for a time 'after' or 'later'. Finding an Earlier Time ⬅️ End Time - Hours = Start Time Use this when the story asks for a time 'before' or 'earlier'. Reading 'O'clock' Time Short hand = Hour, Long hand = 12 To read the time to the hour, find the number the short hand points to.

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Sample Practice Questions

Challenging
A cake needs to bake for 1 hour. It needs to cool for 1 hour. If you want to eat it at 6 o'clock, what time must you put it in the oven?
A.3 o'clock
B.4 o'clock
C.5 o'clock
D.6 o'clock
Challenging
Mia starts homework at 4 o'clock. She reads for 1 hour. She does math for 1 hour. She takes a 1-hour break in between reading and math. What time does she finish her homework?
A.6 o'clock
B.5 o'clock
C.7 o'clock
D.8 o'clock
Challenging
A train has 5 cars. It leaves the station at 10 o'clock. The trip takes 4 hours. What time will the train arrive at the next station?
A.5 o'clock
B.1 o'clock
C.3 o'clock
D.2 o'clock

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