Maths practice for 12-year-olds - page 108 of 355
Number of problems found: 7085
- Cylinder radius hundredfold
The length of the radius of the rotating cylinder base is 5 m. You calculate the radius of an equally high cylinder, the volume of which is a hundredfold. - Octagon side perimeter
The perimeter of the regular octagon is 8u + 16 cm. Calculate the side if u = 0.5 cm. - Son birth year
My only son was born when I was 37 years old. That was exactly 32 years after the death of my grandfather, and he died at the age of 64. Dedecek was 12 years older than Grandma; they got married in 1947, just when Grandma was 18 years old. What year was m - Nut mix weight
Mom bought a mixture of nuts. It contains 0.2 kg of hazelnuts. 1/4 kg of cashew nuts and 2/3 kg of peanuts. How much did the whole mix weigh? - Letter number puzzle
What number is under the letter D if: 88-A = 8 D = C: 10 B + 20 = A 5.B = C - Dolls
Dorotka cut the doll's way out of two batches. She was always left with one more doll, with every two dolls cut out. How many dolls did they cut in total if the number counted 16 of them in the first cut-out? - Mr Adam
Mr. Adam saved € 850. If Mr. Boris had half and a sixth more than he should, they would have the same with Mr. Adam. How many euros has Mr. Boris saved? - Driver speed limit
The driver must not exceed the maximum allowed speed of 90km/h. Can he make the 145 km journey from Cheb to Teplice in an hour and a half? - The proportion Solve for N in this proportion: 6/5=30/N?
- Employees 4
Of 125 employees, 102 are assigned to perform ONLY ONE programming job, either system programming or application programming. Ten employees are not assigned to perform any of those programming jobs. Overall, 52 employees are given to perform ONLY system p - Digit deletion sum
Find the three digits that need to be deleted from 214568793 to make the number as small as possible. What is the sum of these deleted digits? - Two boys 2
Two boys cycled around a cycling track. After cycling 3/5 of the distance, they had covered 54 meters each. Calculate the total distance the two boys will cover when they cycle around the track once. - A labourer
A laborer who works five days a week starts at 10 AM on Monday. If he works for 56 days, on which day will he complete the job? - Linear function graph
The equation of the linear function is: y = -3x + 4 (a) determine the intersections with the axes sketch chart b) for which x applies f (x) = - 1 c) for which x applies f (x) = 0 d) for which y applies f (-1/2) = y - Dimension of the cabinet
The cabinet has a volume of 5.4 m3, a height of 2 m, and a width of 1.5 m. What is the third dimension of the cabinet? - Extra hour earnings
Peter earns € 3.4 per extra hour. How much do all extras earn when they shoot from 9:00 to 14:30, and there are 15 in addition to Peter? - Pool model
The 1:500 scale pool model has internal dimensions of 15 cm, 10 cm, and 2.5 mm. Calculate how many hectoliters of water will be needed to fill a pool that will build according to this model. - Distribution of property
Rajendra, a farmer, had two sons and two daughters. He decided to divide his property among his sons and daughters. So he wrote a "WILL" about the distribution of his property. According to his "WILL", he desired to give 3/5 of the pro - Classroom painting cost
The classroom is 11 m long. The width is 6.5 m, and the height is 4 m. We will pay CZK 7.50 for 1 m of square painting. How much will it cost to paint a classroom? They rounded to the crowns. - City edge distance
In one city, the distance between two adjacent city edges on a map with a scale of 1:500000 measures 48 mm. What is the actual distance between these city outskirts in kilometers?
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