Unit conversion + multiplication - math problems

Number of problems found: 39

  • Hours
    watch_1 How many hours is 9 days?
  • Holidays
    holidays Calculate how many hours take holidays, if take 5 weeks.
  • Milimeters
    meter How many millimeters is 1/4 meters?
  • Weeks
    calendar 38 weeks is equal to how many days?
  • Time
    time Write time in minutes rounded to one decimal place: 5 h 28 m 26 s.
  • Server
    p_pro Calculate how many average minutes a year is a webserver is unavailable, the availability is 99.99%.
  • Pencil cut
    tuzky_2 Veronika cut 10cm pencil. Each turn, the pencil was reduced by 0.2mm. She turned the pencil 100 times. How many centimeters has a pencil now?
  • Heart as pump
    srdce Heart pumps out 5.17 liters of blood in 1 minute. How many liters of blood pumped per hour and how much per day?
  • Pump
    pumpa What power has a pump output to move 4853 hl of water to a height of 31 m for 8 hours?
  • Rainfall
    storm Annual rainfall in our country is an average of 797 mm. How many m3 of water rains on average per hectare?
  • Steps
    step Adult step has a length 76 cm. How many steps will he goes distance 50 meters? How many meters he goes when he makes 700 steps?
  • The fish
    fish The fish vendor sells 5/7 kilos of bangus for Php 72.50. If you will buy 2 1/2 kilos of bangus, how much will cost?
  • Hens
    chicken 11 hens will eat spilled grain from 6AM to 16 PM. At 11 hour grandmother brought 4 hens from the neighbors. At what time was grain out?
  • Drunk man
    drunk-man Drunkman has 2.6‰ of alcohol in the blood. How many grams of alcohol has in blood, if he have 5 kg of blood?
  • Workers
    Clock0400_9 Three factory operators produced 480 units in 50 minutes. How many hours worked? I'm trying to prove or disapprove the idea that the company tell me that it's 2.5 hours. So what is right? Thank you, Petra
  • Bricks
    bricks_truck Brick has volume 2.2 dm3. How many bricks can drive a truck with a capacity of 23 ton? The density of brick is 1.6 g/cm3.
  • Water tank
    water_6 In an empty fire tank, 2150 hl of water jetted in 5 hours. How many hectoliters of water was jetted every hour? How many hectoliters of water was in the tank after three hours?
  • Windows
    wall_w_windows Calculate the area of masonry to build wall with dimensions of 9 m × 4 m with 4 windows of size 64 cm × 64 cm.
  • Glass
    glass Peter broke the window glass with size 110 cm and 90 cm. 1 square meter of glass costs 11 USD. How much money is need to pay for a new glass?
  • Hiking trip
    walker Rosie went on a hiking trip. The first day she walked 18kilometers. Each day since she walked 90 percent of what she walked the day before. What is the total distance Rosie has traveled by the end of the 10th day? Round your final answer to the nearest ki

Do you have an interesting mathematical word problem that you can't solve it? Submit a math problem, and we can try to solve it.

We will send a solution to your e-mail address. Solved examples are also published here. Please enter the e-mail correctly and check whether you don't have a full mailbox.

Please do not submit problems from current active competitions such as Mathematical Olympiad, correspondence seminars etc...