Maths practice for 14 year olds - page 92 of 375
Number of problems found: 7498
- Number multiplication expression
Determine the number by which we must multiply the expression (square root one plus one whole and one quarter) to obtain the number 12. - Whole fraction determination
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). - Triangle angle ratio
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. - Box cardboard material
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 - Class girl count
Girls are 12 more than boys, and boys represent 30% of all students. Find how many girls are in the class. - Businessman goods profit
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 - Orange workshop workers
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? - Worker plan percentage
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. - Typist page speed
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 - width and length
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. - Two buses
On Thursday, 240 skiers had to be transported, and two buses took 30 minutes to do so. If there were 660 skiers on the piste and three buses were used, how long did the transport take on Saturday? - Mr. Fish
Mr. Fish paid 1,080 CZK for the purchase of three Christmas carpets. The difference in weights (in this order) between the first and second carp and between the second and third carp was exactly 80 dag. The price of 1 kg of live carp was 120 CZK. a) Calcu - From peanuts
From peanuts priced at 160 CZK/kg and almonds priced at 200 CZK/kg, 20 kg of a nut mixture priced at 190 CZK/kg is to be prepared. The price of the mixture is determined by the ratio in which the nuts are mixed. a) Determine how many kilograms of each typ - Mr. Filip
Mr. Filip is preparing to reconstruct a garden. He will divide its area into herb, vegetable, and ornamental parts in the ratio 2 : 3 : 5 (in this order). The area of the herb part will be 4m x 2.5 m. a) Calculate in m² the total area of the reconstru
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