Time Intervals

Matt went to the dentist at 2:35. He left the dentist at 3:11. How long was he at the dentist?

• hour and 11 minutes

• 25 minutes

• 36 minutes

• 35 minutes

Wendy started brushing her teeth at 9:56. She brushed her teeth for 16 minutes. What time did she finish brushing her teeth?

• 10:12

• 9:12

• 10:15

• 10:00

What is the elapsed time between these two clocks?

• hour 10 minutes

• hour

• 10 minutes

• 20 minutes

How many minutes is in one hour?

• 30 minutes

• 20 minutes

• 59 minutes

• 60 minutes

Jess ate lunch at 1:00pm. Before she ate lunch, she watched tv for 20 minutes. She got home 10 minutes before she started watching tv, as shown on the number line below.

What time did Jess get home?

• 12:30

• 1:30

• 12:40

• 1:20

How long is our lunch?

• 20 minutes

• 30 minutes

• 35 minutes

• 26 minutes

If you get to school at 7:50 A.M. and lunch is at 12:20 P.M., how long do you have to wait until lunch?

• 5 hours

• 4 hours, 20 minutes

• 4 hours, 30 minutes

• 4 hours

What time is 10 minutes before 8:00 in the morning?

• 8:00 PM

• 6:50 PM

• 7:50 AM

• 7:50 PM

Jennifer begins flute practice at 4:05. She practices till 4:47. How long did she practice?

• 52 minutes

• 50 minutes

• 42 minutes

• 40 minutes

Sarah has band practice 20 minutes after the time shown on the clock. What time does her practice start?

• 5:50

• 10:50

• 10:45

• 9:45