Maths practice for 14 year olds - page 98 of 376
Number of problems found: 7503
- Calculate sphere cap
Calculate the surface of a spherical cap with a height of 6 cm and a radius of 15 cm - Marian mark ways
Marian obtained two different marks in one day. How many ways these marks can he get? - Martin history grades
Martin has an arithmetic average of 2.8 out of five history grades. If he only gets one from now, how many ones would he have to get at least so that the arithmetic mean of his history grades is less than 2? - Bakery worker output
A bakery worker makes 300 rolls more than an apprentice in 2 hours. In 4 hours, they both made 9800 rolls together. What are the hourly output of the worker and the apprentice individually? - Plot map sides
The triangular plot has dimensions of 90m, 110m, and 130m. The land is drawn on a map with a scale of 1:2000. Find the lengths of its sides on the map in centimeters. - Three digit from four digits
How many three-digit numbers can you make using the digits 4,6,7 and 9? - Sheep hay consumption
Twelve sheep will eat 5100 kg of hay in 17 days. How many kilograms of hay will seventeen sheep eat in 12 days? a) 1020kg b) 3600kg c) 5100kg d) 7225kg - Segment center coordinates
The line PQ is determined by points with coordinates P = [- 2; 4] and Q = [4; 0]. What are the coordinates of the center S of the line segment PQ? - Fruit
There are a total of 28 pear and apple trees in the set. There are no other fruit trees in the set. The numbers of pear and apple trees in this order are in the ratio 3:4. Which is false? A. There are 3/4 apple trees among the fruit trees. B. There are fe - Tournament sophomore percentage
Forty-eight high school students took part in the chess tournament. The number of first-graders, sophomores, and third-graders is 3:8:5. Calculate what percentage of sophomores participated in the game. - Backpack pocket price
Barborka chose a backpack for school that was three times more expensive than a slipper pocket. If the backpack were 30 euros cheaper, it would cost the same as a slipper pocket. How many euros did a backpack cost? - Katy ski price
Aunt and uncle bought Katy's skis together. They were 3:2 for the entire price of the skis. Uncle contributed 60 euros. How many euros did Katy's skis cost? - There 20
There are 56,800 kinds of animals. Thirty-five percent of this number live on land. How many kinds of animals live on land? - Triangle area grid
Each square of the net has an area of 25 mm². Calculate the area of the DEF triangle in cm². Express the result as a decimal number to three decimal places. - Four-digit number digits
Please find out how many different four-digit numbers we can create from the digits 3 and 8 so that the two digits three and two digits eight are used in each four-digit number created. - Triangular prism volume
Calculate the volume of a regular triangular prism with a substantial edge length of 8 cm and a prism height of 17 cm. - Jana Petra windows
Jana washes 20 windows alone in 4 hours. Petra would be able to do it in 6 hours. How long will it take to work together? - Bricklayer student wall
The bricklayer could repair the wall himself in 30 minutes. Students would learn in an hour. How long will it take them to work together? - Equation root variable
Which number should be substituted for the variable in the equation: 4x² (7-x) = a-3- (x-2), so that the root of the equation is the number 5? - Chord distance length
The radius of the circle is 5.5 cm. The height is 2.3 cm, which is the chord's distance. How can we calculate the length of the string?
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