Maths practice for 14 year olds - page 89 of 379
Number of problems found: 7575
- Probability 68594
What is the probability that any two-digit number a) is divisible by five b) is it not divisible by five? - Probability 68574
The target is divided into three zones. The probability of a shooter hitting the first band is 0.18, the second band 0.2, and the third band 0.44. What is the probability that a) hits the target, b) miss the target? - Probability 68564
What is the probability that the number a) greater than 4, b) Will the number greater than four fall on the dice roll? - Expression 68504 Determine the number by which we must multiply the expression (square root one plus one whole and one quarter) to obtain the number 12.
- One-seventh 68434
It is given that 1 1/7 of the whole is 32. Determine what 2 1/4 of the total is. (One whole and one-seventh, two whole and one quarter). - Calculate 68394
The sizes of the interior angles of the triangle are in the ratio of 3:4:5. Calculate these angles. - Terezka 2
Terezka has two younger siblings, 40-month-old Anička and 7-month-old Kája. o Calculate how many months it will take for Anička to be four times older than Kája. o Calculate the age difference between Tereza and Anička if Tereza celebrated her sixth birth
- Angle of the sector
Find the angle of the sector of a circle radius of 20 units where the area is equal to the lateral area of a cone with a radius of 8 units. - A scale
A map scale states that every ¼ of an inch represents 20 miles. If two cities are 3½ inches apart, how many miles are actually between the two cities? - Consider 3
Consider the isosceles trapezoid PQRS. The bases are |PQ|=120 mm, |RS|=62 mm and the arm s=48 mm. Find the height of the trapezoid, diagonal length and the area of the trapezoid. - In a bakery
In the bakery, a bun costs 2 CZK more than a roll. Petr bought 4 buns and 8 rolls and paid the exact amount of 62 CZK for this purchase. a) Calculate the price of one bun in CZK. b) Calculate in CZK how much Petr would pay to buy 2 buns and 2 rolls. c) De - Perpendicular 68194
The closed box has the shape of a perpendicular prism with the base of an equilateral triangle. The edge of the base is 24 cm long, and the height of the box is 0.5 m. Calculate how many square meters of cardboard are needed to make 20 such boxes, assumin - Represent 68124
Girls are 12 more than boys, and boys represent 30% of all students. Find how many girls are in the class. - Businessman 68104
The businessman sells the goods for 28 €, bought in a warehouse for 20 euros. What is his profit? - Triples The triplets Jana, Jan, and Jitka have saved a total of 180 CZK. Jana has saved three times as much as each of her two siblings. Jitka and Jan have saved the same amount. a) Determine the ratio of the amounts saved by all three siblings in the order Jan,
- Shortest walk
An ant is crawling around this cube. The cube is made of wire. Each side of the cube is 3 inches long. (Those sides are called edges.) Points A and B are vertices of the cube. What is the least distance the ant would have to crawl if it starts from point - Workshops 67984
Thirty-two tons of oranges are processed in eight workshops with 40 employees each. How many workers process 9 tons of oranges in 9 workshops? - Standardized 67974
The daily standardized output assumes the production of 530 components of the same type. The worker's actual production was 659 pieces. Indicate the percentage of the employees who met the plan. - Writing 67964
The typist typed 20 pages of text in 2 hours and 40 minutes. How many pages of text would she write at the same writing speed in 20 minutes? - Perimeter 67934
The length of the rectangle is (x + 5y - 2), and its width is (x + 2) smaller than the length. Express the perimeter of the rectangle by variables.
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