Reason - practice for 11 year olds - page 18 of 22
Number of problems found: 423
- Unknown number 5
I think of an unknown number. If we enlarge it five times, then subtract 3, and the result decreases by 75%, we get one greater than the number. What number am I thinking? - Store
Peter paid 3 euros in store, more than half the amount on arrival at the store. When he left the shop, he remains 10 euros. How many euros does he have upon arrival at the store? - Pizza master
Master says that he can split pizza into 16 parts by five equals straight cuts. Is it possible? - 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?
- 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 consumed seven horses at the same consumption for six days? - 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? - Family
Martin has just as brothers as 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? - Velocipede
The front wheel of the velocipede from the year 1880 had a diameter 1.8 m. Suppose the front wheel is turned again once, then the rear wheel six times. What was the diameter of the rear wheel?
- Gardens
The garden has a square shape with a circumference of 124 m. Divide it into two rectangular gardens; one should have a circumference of 10 meters more than the second. What size will the gardens be? - Spartakiada
Practitioners lined up in rectangles with a row with four, five, or six exercisers, one always missing an entire rectangle. How many exercisers were on the field, if they have estimated not been more than 100? - Lentilka
Lentilka made 31 pancakes. Eight don't fill with anything, 14 pancakes filled with strawberry jam, and 16 filled with cream cheese. a) How many Lentilka did strawberry-cream cheese pancakes? Max ate four strawberry-cream cheese and all pure strawberry pan - Bob and Bobek
Bobek has two cabbages and five carrots. Bob has two cabbages and nine carrots. When Bobek stepped on the scale weight 5800 g, and Bob weighed 8960 g. Actual Bob weight is 8 kg and Bobek 5 kg. How much weighs one carrot? - More money
Lenka has €4.8 more than Natalia. Who will have more and how much when Lenka gives Natalia €2.5?
- Box of chocolates
In a box of chocolates were 16 candies. Christopher and Luke were distributed: a) Christopher had about four candies over Luke, b) Christopher had about six candies less than Luke, c) Christopher had three times more sweets than Luke. How many had each bo - Tablecloth
I embroider a tablecloth in 20 days, but if I embroider for 3/4 hours a day, I have embroidered it for 15 days. How long do I embroider a day? - Unknown integer
Find the smallest integer: Divided by 2, the remainder is 1. divided by 3. The remainder is 2. divided by 4. The remainder is 3. Divided by eight, the remainder is 7. Divided by 9, the remainder is 8. - Chicken and rabbits (classic)
Grandmother bred chickens and rabbits. It found that the yard has 25 heads and 70 legs. How many chickens and rabbits breed in the yard? - The carpet
How many meters of carpet 90 cm wide need to cover the floor room, which has a rectangular shape with lengths of 4.8 m and 2.4 m, if the number of pieces on the carpet is needed to be lowest?
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