Division + least common multiple (LCM) - practice problems - last page
Number of problems found: 76
- Ships
The red ship begins its circuit every 30 minutes. The blue boat begins its circuit every 45 minutes. Both ships begin their sightseeing circuit in the same place at the same time, always at 10:00 o'clock. a / What time does the boat meet again? b / How ma - The port
Four ships Berthed in the port. Together sail from a port. The first ship will return to port every two weeks, the second after four weeks, the third after eight weeks, and the fourth after 12 weeks. After how many weeks do all the boats meet at the port? - Plum
On the platter are plums. How many were there if its have to be able to share equally among 8,10, and 12 children? - Tram stop
At the tram stop, trams No. 4 and No. 5 met at 10 AM. Tram no. 4 runs every 5 minutes, tram No. 5 at an interval of 7 minutes. How many times will we meet until 12 o'clock?
- Gearing
Gearing consists of two wheels. One is 88, and the second is 56 teeth. How many times turn the smaller wheel to hit the same teeth as in the beginning? How many times will we turn the biggest wheel? - Dressmaker
The dressmaker left a piece of canvas shorter than 5 meters. She is deciding whether it sew a skirt or dress. The canvas was exactly as much as they consumed had cut up her skirt to 120 cm, or 180 centimeters. What a piece of canvas left her? - Three Titanics
Three steamers sailed from the same port on the same day. The first came back on the third, the fourth 4th day, and the third returned on the sixth. How many days after leaving, the steamers meet again in the harbor? - 9.A
Class 9A attends more than 20 students but fewer than 40 students. A third of the pupils wrote a math test to mark 1, the sixth to mark 2, and the ninth to mark 3. No one gets mark 4. How many students of class 9A wrote a test to mark 5? - Two months
Mars has two months, Phobos and Deimos. Phobos orbit around Mars in 7 hours 39 minutes, and Deimos in 30 hours 14 minutes. How long will the relative positions of the three celestial bodies repeat?
- Plumber
The plumber had to cut the metal strip with dimensions of 380 cm and 60 cm to the largest squares to no waste. Calculate the length of the sides of a square. How many squares cut it? - Nuts
How many must we have at least nuts if we can equally divide it to 10 children, 12 children, or 15 children and any nuts left? - Racing track
On the racing track circling three cars. The first pass one circuit for 8 seconds, the second for 20 seconds, and a third for 8 seconds. a) Calculate the number of seconds since starting to catch all three cars together for the first time again across the - Group
A group of kids wanted to ride when the children were divided into groups of 3 children, one remained. When divided into groups of 4 children, one remains. When divided into groups of 6 children, one remains. After being divided into groups of 5 children, - LCM
What is the least common multiple of 5, 50, 14?
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