Time - practice for 12 year olds - page 10 of 52
Number of problems found: 1038
- Jackie
Jackie studied for 1¼ hours, Tom studied for 1¼, and John studied for 2 2/4 hours. How long did they study in all? - Husband and friend
Rhodora spent 5 1/4 minutes texting her husband and 2 1/2 minutes calling her friend. What are the total minutes she spent? - Simultaneously 80154
A pedestrian and a cyclist set off simultaneously from two villages 24 km apart. The pedestrian walked at an average speed of 4 km/h and met the cyclist after ninety minutes of walking. What was the average speed of the cyclist? - Construction 80124
The father offered to work on the construction site for 50 hours as part of a voluntary event. How many hours does he have left after he worked on the construction site for 9 days at 3 and 1 half hours?
- Alwyn
Alwyn spends 1 3/4 hours answering his math homework. He also spends 2 1/3 hours doing his homework in English. How much time does he spend doing his homework for these two subjects? - Two brothers 4
Peter is 24 years, and his brother Tom is 6 years. For how long will Peter be three times as Tom? - Motorcycle 79944
A car travels 11,000 m in one minute. A motorcycle travels at a speed of 330 m in 11 seconds. Which of them will travel the greater distance in 1 hour of driving? - Schoolyard 79854
The children ran the school relay four times around the schoolyard. The shortest measured time was 2 minutes, and the longest was 3 minutes. In what was the longest and shortest time could the relay run around the yard? - Situation 78694
There is a geyser and a volcano in a nature reserve in Iceland. The geyser erupts regularly every 18 days, and clouds of smoke rise from the volcano every 40 days. how many times in the course of 9000 days will there be a situation where we can observe bo
- Thabo
Thabo uses 3 ½ liters of petrol per week for his motorcycle. How long will he be driving with 49 liters? - Marksman 78334
The igniter cord used in normal quarry blasting burns at a rate of 8 mm/s, the length usually used is 60 cm. At what minimum speed must the marksman move to a shelter 150 m away? - Competitor 78234
The first competitor completed the track in 2h12min11s. How much worse was the other's time of 2h19min3s? - O'clock 78004
What is the degree angle made by the hands of a clock when it points to 8 o'clock? - A molecule
A molecule travels with a speed of 8100 centimeters per minute (cm/min). How far would the molecule travel in centimeters in 3.19 seconds?
- Express 66
Express 6 whole 7/10 hours in minutes. - How far 2
How far can a subway car travel in 1 hour if its average speed is 0.96 miles per minute? - Fractions and mixed numbers
Evaluate: a=5/6 + 3/4 b= 2 1/2 + 3 2/3 c= 4/8 - 3/8 d= 5/10 - 3/10 e= 11 - 4/5 f= 6/9 - 3/5 g= 11 2/3 - 7 5/6 h= 3 X 2/7 i= 4/5 X 10/12 j= 1/2 X 9 X 6/12 k= 3 2/5 X 2 1/4 l= 2 2/6 X 5 1/7 - Sidewalk
Casey has 5/6 left of a section of sidewalk to clean. If he can clean 5/18 of a section in 1 minute, how long will it take him to clean what is left? - Jack had
Jack had 4 hours of school. He spent 45 minutes in the library and 1/2 hour on a science lecture and had a lunch break of 25 minutes. How much time is left for the school to get over? (Write the answer as a fraction.)
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