Maths practice for 11-year-olds. - page 188 of 224
Number of problems found: 4479
- 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. - The door
The door to the apartment has a height of 2 m and a width of 80 cm. Calculate how many cm of sealing tape is needed to seal them. There are 5 m of seal tape. Is there be enough tape(write 0 = no, 1 = yes)? - 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 deadhead fox butterfly 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 he 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 21.6cm and an area of 21.6cm squares. - Map distance
A map has a scale of 1:55,000. A line of 10 cm shows the distance between places A and B. How long is the distance in reality? - 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. - Tiles
An area of 5m x 4m is given. One tile is 40 x 40 cm. How many tiles are needed in this area? And how many tiles need to be cut (if the tiles can't fall exactly)? - 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? - Angle subtraction
Calculate: 127 ° 37 '- 58 ° 48' - Milk cans
Two cans hold 20 liters of milk. If we pour from one-sixth to the other, both cans will be the same. How much milk is in each can? - Securities value
After one year, we sold securities issued at an interest rate of 7% for CZK 8,560. What was their original value? - Preparatory test
Less than 50 pupils go to 9A class. A third of the pupils wrote the preparatory test with a one, a quarter with a two, no one wrote with a three, and nine pupils with a four. How many students from 9A wrote the test with a five? - Ratio expressions
Express as a ratio: a/ There are 200 boys and 300 girls in the school. b/ The number of chocolates eaten will triple on Nicholas Day. c/ During the holidays, the number of bus passengers decreased by a quarter. - Flower bouquets
No flower will remain if the gardener binds bouquets of 3, 4, and 6 flowers. If she ties a bouquet of 7 flowers, two are missing. How many flowers does a gardener have? - Brass sculpture
Brass is an alloy of copper and zinc in a ratio of 3 to 2. How much copper and zinc does a sculptor need to make a brass sculpture that should weigh 15 kg?
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