Maths practice for 14 year olds - page 86 of 347
Number of problems found: 6935
- Group placement ways
I have eight groups. How could they place first, second, and third? - Three-digit number creation
How many three-digit numbers can be created from the numbers 1, 2, 3, and 4 if you can repeat them? - Balloon percentage remaining
On the first day, 25% of the balloons were sold. On the second day, 45% of the balloons were. How many percents of balloons did they have left on the third day? - Chocolate bar price
Adam and Andrej bought sweets. Adam paid € 2.9 for three chocolates and 2 bars, and Andrej paid € 4 for four chocolates and 3 bars. How much did the chocolate cost, and how much did the bar cost? - 150 percent
One hundred fifty percent of what number is 15? 150% of x is 15. - Tank water height
The tank has the shape of a rotating cylinder with a base radius of 6 m reach. Water flows at a speed of 2 liters per second for 3 hours. To what height does the water in the tank? - Peter František age
Peter and Francis are 102 years old. Francis is 12 years younger than Peter. How old is Peter? - Parallelogram perimeter construction
Assembly parallelogram ABCD: AB = 4.8 cm, va = 3 cm, BC = 4 cm. Calculate the circuit. Make a sketch. - Make loss
By selling an item 750, a trader made a 25 percent loss. How much loss did the trader make? - Number ratio smaller
The two numbers are in a relatively 3:7 ratio. If the value of the larger number is 21, find a smaller number. - Number difference three
The difference between three times each of two numbers is 33. The first number is 11 more than the second number. What is the value of the second number? - Bucket tap filling
A bucket is filled by one tap in 4 minutes and by another tap in 3 minutes. How many minutes will it take to fill 5 buckets if both taps run simultaneously? - Observatory and aircraft
The aircraft flying towards the observatory was aimed at a distance of 5300 m at an elevation angle of 28º and after 9 seconds at a distance of 2400 m at an elevation angle of 50º. Calculate the distance the plane has flown in this time interval, its spee - The circumference 3
The circumference of a cylindrical water tank is 62.8 m. When it is 4/5 full of water, it holds 125.6 hectoliters. Find the depth of the tank. - Debt purchase gain
Mr. Kabat did not pay the bank debt of 10,000 euros. His debt was bought from the bank by POHLEDOVKA for 5,000 euros. What did the company POHLEDOVKA gain from this, and what did the bank gain from it? - The airplane
The airplane sights a runway at an angle of depression of 23°. It is flying at an altitude of 3 kilometers above the ground. What is the horizontal distance of the airplane from the airport? - Truck material delivery
Two different trucks together would bring the construction material in 6 hours. However, after 4 hours, the first car was transferred to another job, and the second one was driven for another 6 hours. How many hours would it take for the first car to deli - Dice sum probability
What is the probability that if you roll the die twice, the sum of 12 will fall? - An angle of depression
The lighthouse sees a ship at an angle of depression of 25°. The observer from the lighthouse is 82 m above sea level. How far is the ship from the top of the lighthouse? - Isosceles triangle angles
The angle at the base of an isosceles triangle is 18 ° larger than the angle at the central vertex. Calculate the size of the interior angles.
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