Maths practice for 14 year olds - page 250 of 361
Number of problems found: 7217
- Right Triangle Perimeter
The side lengths of two triangles, sorted by size, are: 8 cm, 10 cm, 13 cm, 15 cm, 17 cm, and 19 cm. One of these two triangles is right-angled. Calculate the perimeter of this right triangle in centimeters - Tractors
Two tractors plow the field for 4 hours together. If the first tractor plowed half of the field and then the second tractor completed the job, it would take 9 hours. How many hours does the field plow for each tractor separately? - Pyramid Surface Area
The pyramid has a rectangular base with dimensions a = 5 cm, b = 6 cm. The side edges are identical; their length is h = 11 cm. Calculate the surface of the pyramid. - Paper Collection Weight
Kamil and Kamila brought a total of 140 kg of paper. Kamila weighed 30 kilograms less than Kamil. How much Kamil brought, and how much was Kamila? - Tv screen
The length of its diagonal gives the size of a tv screen. If the dimension of a tv screen is 16 inches by 14 inches, what is the TV screen size? - Cone measurements
Calculate the volume and surface of the rotating cone with the base radius r = 4.6 dm and the height v = 230 mm. - Notebook Price Increase The notebook cost 10.50 euros after an increase of 40%. How many euros would it cost if it increased by only 20%?
- Probability of Not Winning
There are 200 tickets in the raffle with one main prize. Miško bought 25 tickets. What is the probability that Miško will not win the main prize? - Probability - Number Less Six
There are 1 to 20 start numbers in the draw. What is the probability that the first downhill racer drawn will have a start number less than 6? - Arrowroot - vitamins
Ten grams of kiwi contains the same amount of vitamin C as 50 grams of oranges. One hundred grams of arrowroot contains the same amount of vitamin C as 200 grams of kiwi. How many grams of oranges contain the same amount of vitamin C as 50 grams of arrows - Tetrahedron
What is the angle of the sides from the base of a three-sided pyramid where the sides are identical? - Flower Garden Planting Count
The gardeners planted 1,100 flowers. Pansy is 280 less than tulips, and daffodils are 40 more than pansies. a) how many flowers did they plant? b) of the planted flowers, 5% of tulips and 2% of daffodils dried up. How many flowers continued to grow? - Four chocolates
Marek wanted to buy four chocolates but was short of 30 cents. So he bought three chocolates and chewing gum for twenty cents, and he still had 70 cents left. How much did the chocolate cost? How much did Marek have? - Eighth Grade Boys Girls
Fifty-six pupils attend the eighth grade of primary school. There are 18 more boys than girls. How many boys and girls are in the eighth grade of primary school? - Borrowing
I borrow 25,000 to 6.9% p.a. and pay 500 per month. How much will I pay and for how long? - Socík
On the construction site of a new housing estate in Kladno-Kročehlavy, students from the state labour reserve carried out machine plastering of the masonry. 5 students using machines plastered 10 square metres more masonry than 6 plasterers working by han - Boys and Girls in Class
The class has 24 pupils, with 40% fewer boys than girls. How many boys and girls are in the class? - Washing Machine Discount
The washing machine became cheaper by 43.5 euros, which is 15% of the old price. What is the new price? - Two annuluses
The area of the annular circle formed by two circles with a common center is 100 cm². The radius of the outer circle is equal to twice the radius of the inner circle. Determine the outside circle radius in centimeters. - Paint usage calculation
The painter used 3.5 times more paint to paint the tin roof than the gutters. He used 3.1 kg more paint to paint the gutters than to paint the fence. In total, he used 20 kg of paint. How many kilograms of paint did he use to grease the roof, fence, and g
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