Maths practice for 14 year olds - page 111 of 361
Number of problems found: 7217
- Three dices
What is the probability that the sum of points 14 will be a roll of three dice (B, M, Z)? - Iced tea bottle
Iced tea in a bottle costs 1.20 euros. A bottle is seven times cheaper than tea. How many euros does a bottle cost, and how much tea? - Slant height 2
A regular triangular pyramid with a slant height of 9 m has a volume of 50 m³. Find the lateral area of the pyramid. - How long
How long is the diagonal of the square with side a = 50 mm? - Grass mix bag
The gardener has to prepare a grass mix containing clover grass and a meadow mixture at a price of CZK 24 per kilogram. A kilogram of mono-grass mixture costs CZK 22, and a kilogram of meadow mixture costs CZK 30. It will determine how many kilograms of m - Tea mixture package 1 kg of white tea costs CZK 1,800. 1 kg of green tea costs CZK 1,200. It determines how many grams of white and green tea will be contained in a package of Buddha's mixture if it weighs 50 g and costs CZK 65.
- A cone
A cone measures 6 inches in diameter at the base. The distance from the edge of the circumference to the top is 12 inches. Find its volume. - Equilateral cylinder
Find the radius and height (in centimeters) of an equilateral cylinder with a volume of 1 liter. - An equilateral cone
Determine the radius and height (in centimeters) of an equilateral cone that has a volume of 1 liter. - Inflation 2021
Calculate the real year-on-year rate of inflation when white bread in Kaufland cost in 2020 0.89 Eur and in December 2021 already costs 1.09 Eur. In the example we want to point out the real inflation felt by the people, which we understand as the exploit - Lengths of medians from coordinates
There is a triangle ABC: A [-6.6; 1.2], B [3.4; -5.6], C [2.8; 4.2]. Calculate the lengths of its medians. - Find whole
Find whole numbers between 155 and 232 that are divisible by 2, 5, and 10. - Hat and scarf
Katy knitted a scarf four times faster than a hat. Knitting together lasted 15 days. How much did she knit a hat? - Door painting time
Peter and Milo painted the garage door in five hours. Peter would paint the door by himself in 10 hours. In how many hours would Milo paint the door by himself? - What is similar fraction
Which of the following is a similar fraction of 9/10,3/5,1/4 - What fraction 2
What fraction is equal to 50% of 1/3? - The ratio 7
The ratio of the sides of two squares is 4:5. If the sum of their areas is 180 cm². Find the sides of the two squares. - What percent 4 What percent of 40 is 14?
- Three languages 2
Participants of a congress may present their contributions in English, Italian, or Spanish. Each of the 120 participants knows at least two of these languages, and 10 participants speak all three languages. English and Spanish is spoken by exactly as many - The power generator
How much would be paid for the generator if it costs 2000 and 12.5% tax is charged on it?
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