Maths practice for 11-year-olds. - page 185 of 222
Number of problems found: 4421
- Currant planting
There are 600 currant bushes in the orchard. On the first day, they planted two-fifths, and on the second, three-eighths out of the total number of shrubs. How many shrubs do they have to plant? - Number calculation
Calculate a number whose three-quarters is two less than two-fifths its double. - Number puzzle
The difference between five and three times the number, what I think, is three greater than this number. What number do I think? - Triangle sides
The perimeter of the isosceles triangle is 32 cm. The base is 2 cm longer than the shoulder. Calculate the sides of the triangle. - Workers needed
The broad workers will do the job in 22.5 days. How many workers still need to be hired to do the job seven days earlier? - Tile colors
The rectangle 1 m and 40 cm long and 1 m and 20 cm wide is paved with square tiles with a side of 1 dm. There is one row of brown tiles on all edges of the rectangle, white on the inside. How many brown and how many white tiles? - Age puzzle
When asked how many years he has, Jeníček answered: In 12 years, I will be four times as many years as I had 12 years ago. How old is Honza? - Father weight
The son weighs 15 kg. That's 8 kg, less than 1/4 of the father's weight. How much kg does the father weigh? - Floor cleaning
Nine cleaners clean 3150 m² of the floor in 7 days. Determine how many m² of floor eight cleaners will clean in 9 days. - Unknown number
Find the unknown number equal to a quarter of a fifth of a number, which is 152 more than an unknown number. - Square height
The volume of the square is 56l. The length is 10 dm, and the width is 2 dm. What is its height? - Butterfly flight distance
The death's-head hawkmoth flies at a speed of 50 km/h. They will move to us from Africa in 3 and 3/4 days. How many kilometers will it fly on this journey? - Tank full
Two hl of water were poured into a block-shaped tank with dimensions of 450 mm and 600 mm and a height of 900 mm. How many liters of water need to be added to keep the tank full? - Diamond height
Calculate the height of a diamond with a circumference of 21.6 cm and an area of 21.6 cm squares. - Blueberries
Adéla sells blueberries for 50 CZK/1 l, and Zdeněk sells 1 kg of blueberries for 75 CZK. Which of them sells irritants if 1 liter of blueberries weighs 650 g? - Digit sum Find the smallest natural number n, the digit sum of which equals 37.
- Ratios
Reduce the numbers: 50 in a 1:2 ratio 111 at a ratio of 2:3 70 at 10:50 560 at a ratio of 3:8 - Orchard ratios
One gardener has 8 apple trees and 2 pears in his set. The other gardener has 12 apple trees and 3 pears in his set. a/ which gardener has more apple trees per pear? b/ what is the ratio of apple and pear trees in individual orchards? - Side of a square
What is the length of the side of a square when its area is 64 cm square? - Angle subtraction
Calculate: 127 ° 37 '- 58 ° 48'
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