Maths practice for 14 year olds - page 224 of 380
Number of problems found: 7592
- Number reduction puzzle
Determine which number reduced by its three-sevenths is 120. - Grandmother Granddaughter Age Puzzle
Grandma is five times as old as her granddaughter today. 2 years ago, the grandmother was six years less than six times her granddaughter's age. How old is Grandma today? - Waste
How much of the waste is from a circular plate with a radius of 1 m, from which we cut a square with the highest area? - Father Son Age Equation
The father is eight years older than three times the son's age. In 20 years, the father will be twice as old as his son. How many years is a father, and how many are a son? - Acid Solution Percentage
The barrel contains 199 liters of 38% acid solution. What percentage of acid is created when we take 61 liters and replace it with the same amount of water? - Base from Per Mille
Determine the base if 2.8 per mille is 50. - Unknown number percentage
5% of the unknown number is 224 less than 25% of the unknown number. - Sheep Hens Legs Count
The same number of hens as sheep ran around the yard. They had a total of 168 feet. How many were sheep, and how many hens were there? - Survey women respondents
In the survey, 2/3 of those who correctly answered the question were women. 4/5 of all respondents answered the question correctly. How many women answered correctly if a total of 900 respondents participated in the survey? What proportion of all responde - Shopping vegetables
John and his mother were shopping. His mother bought 2 kg of peaches and 5 kg of potatoes and paid CZK 173. The neighbor bought 3 kg of peaches and 4 kg of potatoes and paid CZK 186. How much did 1 kg of peaches and 1 kg of potatoes cost? - The ratio
The ratio of the two numbers is 4, and their sum is 75. Determine both numbers. - Three machines
The power of the three machines is 2:3:5. Two most powerful machines produce 400 parts per hour. How many components make all three machines in 3 hours? - Grade pupil distribution
There are a total of 58 pupils in the sixth and seventh grades and a total of 57 pupils in the sixth and eighth grades. There are a total of 59 pupils in the seventh and eighth grades. How many pupils are there in each class? How many students are there i - Helmet
Nowadays, better results can be obtained in cycling due to the rider's physical preparation and updated technologies. One of the essential parts of the rider's equipment is their helmet. While most bikers wear a helmet mainly to protect themselves, racers - A tenth of a second
A frequent competition, even for amateurs, is long-distance running. The running time was measured with a stopwatch with a precision of one tenth of a second. Two other competitors were diligently overtaking each other in the last metres before the finish - Television quality probability
In the department store, they have 100 televisions, of which 85 are of first quality, and 15 are of second quality. The first ten buyers received a premium TV. What is the probability that the eleventh is sold a second-rate TV? - Exercise Books Division Ways
How many ways can three children divide five small and six large exercise books? Admittedly, some get nothing. - Dual increases
The two numbers are in the ratio of 5:6. If the first one decreases by ten, and the second one increases by ten, then these two numbers are in the ratio of 4:7. What are the numbers? - Chocolate Boxes Weight
They delivered 75 kg of chocolates to 214 candy boxes at the Orion plant. Some weighed 500 g, others 250 g. How many boxers were there? - Profit from Diluting Juice
In the restaurant, they sell 0.2 l of juice for CZK 14. The waiter cheats the guests by diluting the juice with water at a ratio of 4:1. Water costs CZK 6 for 1 liter. How much extra did the waiter charge when he sold 10 liters of this mixture?
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