Maths practice for 14 year olds - page 332 of 362
Number of problems found: 7231
- Workers
Workers are digging a jump pit in the schoolyard. The pit is cuboid in shape, with a length of 5 m, a width of 20 dm, and a depth of 36 cm. They excavate 0.4 cubic meters of soil an hour. How much time (hours and minutes) is needed to excavate this pit? - ISO Triangle V2
The perimeter of the isosceles triangle is 474 m, and the base is 48 m longer than the arms. Calculate the area of this triangle. - QuizQ2
The square of the first number equals three-fifths of the second number. Determine both numbers, given that the second number is five times greater than the first, and neither number equals zero. - Product V2
The price of the product was increased by 24%. Price increased by 316. How much money would this product cost if it was, on the contrary, by 14% discounted? - Triangular prism
The base of a right triangular prism is a right triangle with hypotenuse 14 cm and one leg 9 cm. The height of the prism equals 2/9 of the base's perimeter. Calculate the surface area of the prism. - ISO trapezoid v2
The bases of the isosceles trapezoid are measured 20 cm and 4 cm, and their perimeter is 55 cm. What is the area of a trapezoid? - Wheel
The diameter of the motorcycle wheel is 55 cm. How many times rotates the wheel on the road long 3 km? - Sphere - parts
Calculate the area of a spherical cap, which is part of an area with a base radius ρ = 8 cm and a height v = 4.2 cm. - Two workers
The first worker completed the task by himself in 12 hours, and the second in 10 hours. After two hours of joint work left, the first worker went to a doctor, and the second finished the job himself. How many hours did the second worker work himself? - Tickets
Tickets to the zoo cost $4 for children, $5 for teenagers, and $6 for adults. In the high season, 1200 people come to the zoo every day. On a certain day, the total revenue at the zoo was $5300. For every three teenagers, eight children went to the zoo. H - Paul and Honza
Johnny went to chat on a bike without a break 4.0 hours. Paul went the same way without breaks 40 minutes longer. The difference between the speeds of the two boys was one kilometer per hour. How fast was Paul if you know that the boys' speed did not chan - Sports games
Pupils of the same school participated in district sports games. When dividing the teams into teams, it was found that in the case of the creative teams with four pupils, one pupil was remaining, five-member teams had two pupils, and six-member teams had - Chalet
The children were on a school trip to the mountain. One-third of the journey went by train and continued by bus. When you get off the bus, they remain a third of the distance they traveled by bus. What part of the journey do children go by bus (write as a - Climb in percentage
The height difference between points A and B is 475 m. Calculate the percentage of route climbing if the horizontal distance between places A and B is 7.4 km. - The body
The body on the figure consists of cubes with an edge length of 7 cm. What surface has this body? - Three dice
When you throw three dice was, the sum total of the dice 10. The yellow dice fell one eye more than on the red, and brown fell three eyes less than red. How many eyes fell on every dice? - Enterprise and wages
The enterprise operates a total 115 workers, and their average salary is M dollars. If the company has hired an additional 15 employee whose average wage would be the S dollars, it will reduce the overall average salary by 2.6%. Calculate the value of the - Pit
The pit is 1.2 m deep and in the shape of a truncated pyramid with a rectangular base. Its length and width are the top 3 × 1.5 m and the bottom 1 m × 0.5 m. To paint one square meter of the pit, we use 0.8 l of green paint. How many liters of paint are n - Loan
Apply for a $ 15000 loan, the loan repayment period is 6 years, and the interest rate 2.8%. How much should I pay monthly (or yearly if paid yearly)? An example is for practice geometric progression and/or periodic payment for an annuity. - Parallelogram
The perimeter of the parallelogram is 190 cm. The length of one side is 1.3-times longer than the length of the shorter side. What is the length of the sides of a parallelogram?
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