Time Conversion and Calculation Problems

This video tutorial covers operations with time, including conversions between different units such as seconds, minutes, hours, and days. It provides examples of converting hours to minutes, minutes to hours, and days to minutes. The tutorial also explains how to add and subtract time, with practical examples. Finally, it demonstrates calculating total exercise time per week. The video emphasizes the use of unit fractions for conversions and highlights the importance of aligning units when performing arithmetic operations with time.

What is a unit fraction in the context of time conversions?

• A fraction that is always greater than one

• A fraction that is always less than one

• A fraction that is always equal to zero

• A fraction that is always equal to one

Tags

CCSS.4.MD.A.1

CCSS.5.MD.A.1

How many minutes are there in four hours and twenty-five minutes?

• 275 minutes

• 265 minutes

• 255 minutes

• 245 minutes

Tags

CCSS.4.MD.A.1

When converting 400 minutes to hours, what is the result?

• 6 and 2/3 hours

• 6 and 1/2 hours

• 7 hours

• 6 hours and 40 minutes

Tags

CCSS.4.MD.A.1

How many minutes are there in two days?

• 2,860 minutes

• 2,800 minutes

• 2,880 minutes

• 2,900 minutes

Tags

CCSS.4.MD.A.1

What is the first step in converting days to minutes?

• Convert days directly to minutes

• Convert days to hours

• Convert days to weeks

• Convert days to seconds

Tags

CCSS.3.MD.A.1

What is the result of adding five minutes and forty-two seconds to twelve minutes and thirty-five seconds?

• 17 minutes and 77 seconds

• 18 minutes and 17 seconds

• 18 minutes and 77 seconds

• 17 minutes and 17 seconds

Tags

CCSS.3.MD.A.1

What is the key consideration when adding time in different units?

• Ignoring the units

• Adding the largest unit first

• Converting all units to seconds

• Aligning the units before adding

Tags

CCSS.3.MD.A.1

How do you handle borrowing when subtracting time?

• Borrow 30 units from the next higher unit

• Borrow 50 units from the next higher unit

• Borrow 60 units from the next higher unit

• Borrow 100 units from the next higher unit

Tags

CCSS.3.MD.A.1

What is the result of subtracting 49 minutes and 20 seconds from 2 hours and 29 minutes?

• 1 hour and 40 minutes

• 1 hour and 39 minutes

• 1 hour and 37 minutes

• 1 hour and 38 minutes

Tags

CCSS.3.MD.A.1

If you exercise for one hour and twenty minutes four times a week, how much total time do you spend exercising?

• 4 hours and 80 minutes

• 5 hours

• 6 hours

• 5 hours and 20 minutes

Tags

CCSS.3.MD.A.1