Maths practice for 12-year-olds - page 245 of 347
Number of problems found: 6923
- Dividing Prize by Ratio
A group of three girls won a € 30 science competition. Camilla, Maggie, and Susan divided the win according to their performances in the ratio of 3:4:5. How many euros have each of them? - Percentage of a Meter
What percentage of 1m is 15cm? - MO Z6-1-3 2017 chessboard
Veronika has a classical chessboard with 8×8 cells. The rows are marked with digits 1 to 8, the columns with letters A to H. Veronika placed on the cell B1 a knight, which can be moved only as in chess. 1. Is it possible to move the knight in four moves t - Map Scale Distance Calculation
The air distance from the hotel to the castle is 4.4 km. What is the map's scale on which this distance is shown by a line 4 cm long? - Garden
The rectangular garden has dimensions of 27 m and 30 m. Peter and Kate split it in a ratio of 4:5. How many square meters did Katkin measure part of the garden? - Loan Repayment with Interest
Calculate how long it will take the Šetrný family to repay the loan if, after the first year, they paid €1350 in interest and the loan's interest rate was 6% p.a. They will repay the loan to the bank for €3,000 each year, and the bank will only add intere - Basketball Shooting Success
The boy was practicing shooting at the basket. Out of the first 12 attempts, he missed 9 times. He was successful in all other attempts except a single penultimate throw. He thus achieved exactly half the success rate (he hit the basket in half of the att - Anthill
Agent 007 was observing movement in an anthill. He noted in his secret notes that in the morning there were 1,317 ants in the anthill. During the day: a ants left, then b ants returned, then 2a ants left and c ants arrived. Then x ants stung the agent, so - Pellets
One pallet of pellets costs 5040 without VAT. One pallet weighs 1050 kg. How much do 1-ton costs? - Motion of cars
The route from Zlín to Liberec via Olomouc and Hradec Králové measures s = 300 km. a) Mr. Horák set out from Zlín at time tH = 16:00 h with a truck at an average speed of vH = 40 km/h. At time tN = 17:30 h, Mr. Novák set out after him by car with an avera - Water 31
Richard takes 3 1/6 liters of water before noon and 2 3/5 liters of water in the afternoon. How many liters of water does Richard consume a day? - Finding a Number
I think the number if I assign 8 (add) to it and divide the result by two, I get a number 46 less than the number, I guess. What number do I think? - Mixture
How many percentage mixtures do we get by adding 23 ml of matter to 89 ml of water? - Washing Powder Duration
Andrew found that three-quarters of a bag of washing powder was used up by his family in 12 weeks. How many more weeks will the remaining powder last? How long does a whole bag of washing powder last? - Mothers and Benches Puzzle
When the mothers sat down on the benches at the Christmas gazebo, only one mother sat on the last bench. When the six of them sat down, one mother remained standing. How many mothers were there on the gazebo, and how many benches could they sit on? - Two annuluses
The area of the annular circle formed by two circles with a common center is 100 cm². The radius of the outer circle is equal to twice the radius of the inner circle. Determine the outside circle radius in centimeters. - Bus Route Length
The long-distance bus driver went 2/5 of the route length in the morning and 1/3 of this length in the afternoon. He still has 60 km to the finish. How long is the long-distance bus route? - Mother and Child Age
A mother is 21 years older than a child. In 6 years, the mother will be five times more than the child. Question: Where's Dad? - Number with ones
The first digit of the number is 1. If we move this digit to the end, we get three times the higher number. What is the number? - Orchard
One-eighth of the trees in the fruit plant in winter froze, and one-twelfth were damaged by disease and pests. Healthy trees remained 152. Is it enough to supply 35 trees to restore the original number of trees in the orchard?
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