Maths practice for 14 year olds - page 344 of 362
Number of problems found: 7226
- Machine
The price of the new machine is € 65000. The 12% of residual value is depreciated every year. What will the value of the machine be after 2 years? - Balls
Michal told Martin: give me one ball, and I'll have twice as you. Martin said: Give me 4, and we will have equality. How many balls does each have? - Surveyor
Calculate the area of what may vary rectangular if it was focused by a surveyor and found the dimensions 10 x 16 m while in each of the four joint points can be position deviation 8 cm? - Madams
During spring cleaning, ladies were going to wash the windows. Mother takes 2 hours to wash all the windows, the grandmother takes 2 times longer, and Paula washes all the windows in 2 hours. How many hours will you spend washing the windows of this "wome - Gon functions
Decide which numbers (values of trigonometric functions) are positive or negative (or zero). Positive mark +1 and negative -1. - Car
The car goes from point A to point B at speed 71 km/h and back 83 km/h. If it goes there and back at speed 82 km/h trip would take 5 minutes shorter. What is the distance between points A and B? - Cars plates
How many different license plates can a country have since they use 3 letters followed by 2 digits? - Lock
A combination lock will open when the right choice of 3 numbers (from 1 to 16 inclusive) is selected. A. How many different lock combinations are possible? B. Is the combination lock named appropriately? - Train
A passenger train traveled for 2 hours 62 km. 1.8 hours after its departure started fast train and caught it on 162 km. How many km/h is different from its average speed? - Commitee
A class consists of 12 males and 15 females. How many committees of 6 are possible if the committee must consist of 4 males and 2 females? - Coin and die
Flip a coin and then roll a six-sided die. How many possible combinations are there? - Words
How many 2 letters "words" are possible using 14 letters of the alphabet? a) without repetition b) with repetition - Shelf
How many ways are there to arrange 6 books on a shelf? - Area codes
How many 4 digit area codes are possible if the first number can't be zero? - Kids
How many different ways can sit 6 boys and 3 girls in line if girls want to sit on the edge? - Thales
Calculate the length of the Thales' circle described to the right triangle with hypotenuse 44.2 cm. - Homework
Together, the mother and Kate weigh 21.9 kg more than the father. The father weighs 8.1 kg more than the mother. The father weighs 40.2 kg more than Kate. Determine the weights of the father, mother, and Kate. - Tetrahedron
Calculate the height and volume of a regular tetrahedron whose edge has a length of 13 cm. - Percentages
Expressed as a percentage: - IS trapezoid
Isosceles trapezoid arm measured 80 cm. Height is 65 cm, and the middle segment is 71 cm. Find the length of its bases.
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