Maths practice for 14 year olds - page 105 of 370
Number of problems found: 7393
- Find two 2
Find two decimals between 4.56 and 6.927 so that the difference between any two consecutive decimals is the same. - A pair
A pair of shoes costs $52.99, and the sales tax is 8%. Use the formula C = p + rp to find the total cost of the shoes, where C is the total cost, p is the price, and r is the sales tax rate. - Commission rate
George sold a house and lot worth Php 2,000,000.00. If the owner gave him Php 110,000.00 as a commission, what is the commission rate? - Turning machine
What is the smallest diameter of the cylinder so that a square prism with a side of 40 cm can be turned from it? - Last wagon
A 200 m long train passes through the 700 m long tunnel so that a time of 1 minute elapses from the entry of the locomotive into the tunnel to the exit of the last wagon from the tunnel. Find the speed of the train. - Circular arc
Calculate the center angle and length of the circular arc if the radius r = 21 cm and the area of the slice is 328.5 cm² - Quadrilateral in circle
A quadrilateral is inscribed in the circle. Its vertices divide the circle in a ratio of 1:2:3:4. Find the sizes of its interior angles. - Circular segment
What is the radius of a circular section whose central angle is 36° and the area of S = 53.095 cm²? - Circular segment Calculate the area of a circular segment if the radius r = 80 cm and the central angle is α = 110°.
- The number - digits
The vortex of the three given digits formed different three-digit numbers. When she added up all these numbers, she published 1554. What numbers did Vierka use? - Round table
Find the number of ways in which eight people can be seated at a round table such that 2 of them always sit together. - Two expressions
When x = 3 and y = 5, how much does the value of 3x² – 2y exceed the value of 2x² – 3y? - Legislation 58863
To make a gold decorative item, we alloy 250g of 18-carat and 200g of 14-carat gold with tin. How much tin must be added to obtain 14.6-carat gold? Express the purity of the obtained gold in the sense of the applicable legislation. - Silvia
Silvia is 20% lighter than Katy. What percentage is Katy heavier? - Mushrooms
The ratio of dry matter and water is 1:9 for most mushrooms. Dry matter consists of carbohydrates, proteins, minerals, fat, and water in a ratio of 50:30:8:3:9. How many kilograms of fresh mushrooms need to be processed into a 10 kg package of dried mushr - The tourist
The tourist will cross a 5 km long section in 3 hours. Part of the journey goes at a speed of 0.8 m/s and the other part at a speed of 0.4 m/s. Find the length of the first and second parts of the journey. - Martin 58723
Jakub and Martin have a total of CZK 950. Jakub has a tenth less than Martin. How much CZK does Jakub have? - A discount
A discount clothing store sells a $72 sport jacket for $24 off the regular price. What is the discount rate? - Percentage 58703
In the park, with an area of 1413 m2, there is a circular fountain with a diameter of 6 m. What percentage of the park does the fountain occupy? - Quadrilateral 58663
They melted the steel part in the shape of a truncated quadrilateral needle and produced three identical cubes. Determine the surface area of one cube if the edges of the bases of the pyramid are 30 mm and 80 mm and the pyramid's height is 60 mm. I don't
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