Maths practice for 11-year-olds. - page 175 of 222
Number of problems found: 4421
- Product movement
The machine moves 36 products in half an hour. How many products will move in three-quarters of an hour? - Rectangle sides
Calculate the length of the side of the rectangle if you know its perimeter and the other side: a) o = 100 m: b = 2.5 m b) o = 80 cm: a = 20 mm c) o = 38.6 dm: b = 45 cm d) o = 88 mm: a = 2.5 cm - Square garden side
A rectangular garden is 81 metres long and 36 metres wide. How long will the side of a square garden with the same area be? - Currency equivalence
They have their own money in the magical land, Fu, Ru, and Mu. Three Mu are equal to five Ru. Six Ru is equal to eighteen Fu. How many Fu are equivalent to one Mu? - Bowl and cup price
Three bowls together have the same price as seven plates. Four bowls have the price of six cups. How many cups are as valuable as 28 plates? - Floating floor
We will put a floating floor in the room, which is 6.5 m long and 5 m wide. It is sold in packs of 1 m². One package costs 279 CZK. How many packages will we have to buy, and how much will we pay for them? - Argicultural field
The field has a rectangular shape with a width of 180 m and a circumference of 940 m. How many hectares of the acreage has a field? - Division
Which number in division 16 gives 12 and the rest 3? - Symmetry
Eve loves symmetry in shapes and numbers. Yesterday she invented an entirely new kind of symmetry - divisible symmetry. She wrote all five-digit numbers with different digits with the following property: The first digit is divisible by 1, the second by 2, - Rectangular plot
The rectangular plot has sides 20 m and 28 m long. Calculate the area of the plot and find out how long the longer side of the plot with the same area must be if the shorter side is 16 meters long. Also, calculate the length of the fence around each plot. - Pair of numbers
Hannah gave Simon a riddle: guess a pair of numbers whose GCD is 7, and LCM is 90. Katy wanted Simon to guess such a pair for which GCD is 7, and LCM is 91. Which riddle could Simon guess? A: Katy B: Hannah C: neither D: both - Unknown number 16 My number's tens are three times more than the ones. My number's ones are twice the number of thousands, and my number's hundreds are half the number of tens. I have two ones. Which number am I?
- Block surface
Find the surface area of a cuboid whose one face has an area of 48 cm² and another face has an area of 30 cm². - Flowers
The flower has six flowers, and each flower has a number. These are the numbers: 20,40,39,28,8,9. What number will be in the middle of the flower so that the numbers come from the flowers when we subtract and add? - Apartment cost
The municipal office sold four identical flats and earned CZK 864,000 for them. How many crowns did one apartment cost? If the family repaid CZK 2,000 a month, would they repay this apartment in 10 years? - Road repair time
Ten workers managed to repair the road in 22 days. After four days, two more workers joined to speed up the work. How many days does it take to repair the road? - Cube diagonals
Determine the length of the body and wall diagonals of the cube, the volume of which is equal to 0.343 decimetres. Also, calculate its surface. - Sheep arrangement
A shepherd has fewer than 500 sheep. If he arranges them in rows of 4, 3 are left over. If he arranges them in rows of 5, 4 are left over. If he arranges them in rows of 6, 5 are left over. But they can be arranged exactly in rows of 7. How many sheep doe - Letter puzzle
Find out what numbers need to be substituted for the letters X, Y, and Z to have the following relation: XZY + XYZ --------- YZX - How many
How many cans of blue paint need to be bought if the interior of the garden pool, which is 5 m long, 3 m wide, and 1 m deep, is to be painted? There is 1 kg of paint in each can. One can is enough for 8 m² of area.
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