Maths practice for 11-year-olds. - page 214 of 230
Number of problems found: 4584
- Measures 1576
Katy, whose step measures 50 cm, counted 294 steps from her house to her aunt's. If his step measures 70 cm, how many steps will Katy's father take to his aunt?
- Luminosity 1575
Ten lamps with a certain luminosity are needed to illuminate the rooms. How many lamps with 2.5 times more brightness are needed for the same lighting in the same room?
- Feed for horses
In the kennel, have feed for two horses for 21 days. The station brought an additional five horses. How many days will feed for all the horses last if they have the same daily ratio?
- Coal
The daily consumption of 1.6 tons of coal is sufficient to supply the boiler for 42 days. How long is sufficient to supply when it burns only 1.2 tons of coal a day?
- Florist's
The flower shop has 72 white and 90 red roses. How many identical bouquets can they most tie together so that all the roses are used?
- Tailor master
There are less than 50m of textile in the tailoring workshop. No textile is left when cutting on a blouse (consumption 1.5m). No textile is left when using a cloth (consumption of 3.2m). How many meters of textiles are in a tailor's workshop?
- Summerjobs
The agency gives summer jobs to 2352 students in 2018. The one-eighth was high-school students. The rest were undergraduates. How many undergraduates work via an agency in 2018?
- Seven tractors
Seven tractors plowed 308 ha field in four days. How many hectares of fields will plow nine tractors in 3 days at the same power?
- Painting
Joseph and Fero painted the bench for four hours. If four friends helped him, how many hours would it take him to work?
- Rabbits
Michael is breeding rabbits. His seven rabbits will eat 98 feed rations for seven days. How many should five rabbits eat equal portions of feed in 6 days?
- Painters
Fifteen painters painted the fence for 280 minutes. For how many minutes, paint half of this fence with 12 painters?
- The horses
A couple of horses consume 88 kg of oats for 14 days. How many oats were consumed by seven horses at the same consumption for six days?
- Wood
Peter chops wood. If they cut down a half hour a day, he would finish work in nine days. But Peter needs to finish work three days earlier. How many minutes should they cut down a day?
- Afternoon 1555
They paid 15 euros for an afternoon snack for 30 students. How many euros would the exact snack cost for 25 students?
- Cooks
Four cooks cleaned 5 kg of potatoes for 10 minutes. How many cooks would have to work cleaning 9 kg of potatoes for 12 minutes?
- Greenhouses
Two workers would complete the installation of greenhouses for 54 hours. For how many hours does the installation have nine workers?
- Family
Martin has just as brothers and sisters. But his sister Jana has two times more brothers than sisters. a) How many children are in this family? b) How many boys and how many girls are in the family?
- Minute hand v2
In how many minutes does the clock's minute hand angle be 60 degrees?
- Square and circle
Into the square is an inscribed circle with a diameter of 10 cm. What is the difference between a circumference square and a circle?
- Minute-hand
How long will a large (minute) hand travel on the clock for 48 minutes if its length is 56 cm?
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