Maths practice for 12-year-olds - page 107 of 355
Number of problems found: 7081
- Practicing piano
Hoor spent 15 hours last week practicing piano. If 3/7 of the time was spent practicing warm-up routines, how much time did he spend practicing warm-up routines? - The temperature 24
The temperature at 04:00 was −3°C. By 09:00, the temperature had risen by 8°C. What was the temperature at 09:00? - Children's room
The children's room is a square with a side of 3m. What is the area of the room layout on a 1:50 scale plan? - Cyclist car journey
The cyclist travels 10 km per hour, car 60 km. The cyclist went for 3 hours. How many minutes does the same journey take to a car? - Apple color basket
There were 15 apples in the basket. There were four fewer red apples than green ones and a quarter fewer reds than red ones. How many red apples were in the basket? - Garden - fence
The fence around the garden measures 360 m. Of these, 72 18/20 m are damaged and must be repaired. How many meters of fence is sufficient? - Juraj monthly pocket
Juraj pays from a monthly pocket quarter for a snack, a fifth for drinks, and a third for technical details for a PC. He saves the remaining 13 euros. What's his monthly pocket money? - Carp average weight
The fishery gradually sold carp weighing 2 1/2 kg, 1 5/6 kg, 1 3/5 kg, 2 1/10 kg, 2 kg, and 2 2/3 kg. What was the average weight of 1 carp? - Block edge sum
The block has a square base of 36 dm2, and its height is 1/3 of the length of the base edge. Find the sum of the lengths of all edges of a block. - 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?
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