Add minutes with digital clocks
Preparing your practice…
Go beyond practice with Brilliant’s digital tutor, full interactive curriculum, personalized learning, and progress reports.
Add minutes with digital clocks: skill guide
| Objective | Learners find a later digital time after adding a multiple of 5 minutes, from 5 to 55. |
|---|---|
| Grade | Grade 1 |
| Standard | CCSS.MATH.CONTENT.3.MD.A.1 |
| Difficulty | Developing · Mixed |
| Representation | Numerical equation, Digital clock |
| Practice format | Interactive, account-free practice with immediate feedback |
Objective
Learners find a later digital time after adding a multiple of 5 minutes, from 5 to 55.
What this practice covers
Learners see a starting time on a digital clock and a number of minutes to add, then choose the ending time from five choices. There is no clock face, so learners work from the digits. The first third of problems add 5, 10, or 20 minutes, and the first half stay within the hour. Later problems add up to 55 minutes and can cross into the next hour. Choose a 5-question Quick check or a 15-question Practice session; the difficulty progression adjusts to the selected length.
Standards alignment
Prepares for Common Core: CCSS.MATH.CONTENT.3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes.
Who it’s for
This practice is designed for Grade 1 learners building an early understanding of clocks and time. It is also useful for older learners who want a calm visual review of how hours and minutes are represented.
What to know first
- Learners should count by fives to 55, read digital times, and know that 60 minutes make one hour.
Difficulty and scaffolding
Developing · Mixed stage
Problem representations
- Numerical equation
- Digital clock
Three worked examples
- Start at 3:10 and add 5 minutes. 10 + 5 = 15, so the ending time is 3:15.
- Start at 6:20 and add 20 minutes. 20 + 20 = 40, so the ending time is 6:40.
- Start at 8:45 and add 25 minutes. 15 minutes reaches 9:00, and 10 more makes 9:10.
Likely misconceptions
- Learners may add the minutes to the hour, or keep the same hour after the minutes pass 60. For example, 7:50 plus 15 minutes is 8:05. Count 10 minutes to reach 8:00, then add the 5 minutes that are left.
Hints and explanations
- Start at 3:10 and add 5 minutes. 10 + 5 = 15, so the ending time is 3:15.
- Start at 6:20 and add 20 minutes. 20 + 20 = 40, so the ending time is 6:40.
- Start at 8:45 and add 25 minutes. 15 minutes reaches 9:00, and 10 more makes 9:10.
What to practice next
This is the last Grade 1 practice. Grade 2 practice is coming soon.
Editorial review
Reviewed by Brilliant’s curriculum team. Exercises are generated within defined difficulty ranges and checked against verified answer rules.
Add minutes with digital clocks FAQs
What does add minutes with digital clocks teach?
It teaches learners to add minutes to a digital time without a clock face. They add to the minutes after the colon and change the hour when the total reaches 60.
How is this different from the analog-clock version?
The analog version shows a second clock with the ending time. This quiz shows only the starting time in digital form, so learners work out the ending time themselves.
Should telling-time practice be timed?
No timer is necessary. Accuracy and explanation should come first. Ask the learner to say the starting time, add the minutes, and then check whether the hour should change.
How can an adult help after a mistake?
Have the learner count on by fives from the starting minutes, saying each time aloud, until the full amount is added. Keep the correction brief and let the learner retry the same problem before showing the answer.