Maths practice for 11-year-olds. - page 192 of 222
Number of problems found: 4421
- Plot dimensions
Calculate the actual proportions of the rectangular plot in meters, which has dimensions of 70 mm and 90 mm, on a 1:2000 scale plan. - Oats supply
Five horses will eat through the oat supply in 15 days. How many days will the supply last for three horses? - Number puzzle
Three times the unknown number minus ten is less than one hundred, as one hundred is more than twice that number. Which number is it? - Same sum and product
Which two single-digit numbers have the sum and product of the same number? - Bulb consumption
Eighty identical light bulbs shine in the sports hall for two hours. How long does it take to consume the same energy from 100 such bulbs? - Brick delivery
The truck driver drives bricks for construction. If he went three times a day, he would produce the bricks needed for construction in 12 days. How many times a day does he have to go to finish work three days earlier? - Punch cost
Three punch cuts cost as much as two creases. How much does it cost if five punch cuts cost 2 euros 50 cents? - Expressions
Find out value of expressions if a = -1, b =2: x=b - 2a - ab y=a³ - b² - 2ab z=a² b³ - a³ b² w=a + b + a³ - b² - Digits of age
The product of the digits of Andrew's age six years ago is the same and not equal to 0. Andrew's age is also the youngest possible age with these two conditions. After how many years will the product of the digits of Andrew's age again be the same as toda - Birthday ages
Grandma and her granddaughter Barunka have a birthday on the same day. During six consecutive birthday celebrations, Grandma's age was always divisible by Barunka's age. How many birthdays did Grandma celebrate at the last of these six celebrations? Grand - Digit count
How many numbers from 0 to 999 contain at least one digit, 5? - Board cost
The school paid CZK 25,400 for five identical boards and two printers for a computer. Calculate how much one board costs if one printer's price is 4500 CZK. - Nut piles
What is the smallest number of nuts we can divide into 24 and 36 identical piles? - Number puzzle
I think the number is less than 30. I get it when I gradually add three to zero, when I add four to zero, and when I add eight to zero. What is the number? - Lemonade bottles
Three glasses are to be filled with lemonade. One can hold a quarter of a liter, the second a third of a liter, and the third 0.4 liters. How many 0.33l bottles will we need, and how much lemonade will be left in the last bottle? Express in fractions. - Rainwater tank
The garden tank for rainwater is cuboid in shape, the bottom of which is square, with a side 150 cm long and 80 cm high. How many 15-liter buckets do we need to drain the water from the tank? - Zoo tickets
One children's ticket to the zoo costs €3. One ticket for an adult costs €6. Aunt Kate and Uncle Jano went to the zoo with the children. Uncle Jano paid for all the tickets at the box office. Aunt Kate then gave him €15 for herself and all the girls. How - Board cutting
Cutting a wooden board into five parts takes 20 minutes. All slices are the same length. How long would it take to cut into eight pieces if we still cut at the same speed? - Rink entrance
There were 60 people at the rink, four-fifths of which were children under 15 years of age. A ticket for children under 15 costs €1 and for adults €2. a) How many children were there at the rink? b) How many adults were there? c) How many euros did they c - Divisor sum
The sum of all divisors of a certain odd number is 78. Determine the sum of all divisors of twice this unknown number. What is an unknown number?
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