Maths practice for 11-year-olds. - page 168 of 222

Number of problems found: 4426

Strawberries 4785
Friends Marika and Katka decided to prepare strawberry jam together. According to the recipe, they needed 50g of sugar for 0.5kg of fruit. How many kilograms of sugar must the friends prepare if they make jam from 2.3 kg of strawberries?
Rectangular 4780
The television studio plan is made on a scale of 1:150. It shows a rectangular studio measuring 5 cm and 6 cm. If we pay 356 crowns for 1 m² of floating floor, how many crowns will we pay to cover the studio with a floating floor?
Difference 4779
What is the difference between the largest and smallest numbers, composed of only odd digits and none of the digits repeated in the numbers?
Apples
One kilogram of apples costs 25 CZK. Calculate how much you will pay for 700 g.
Strawberry 4769
They sold 4/7 strawberry ice cream and 36 servings of vanilla ice cream in the store. How many servings of ice cream did they sell that day?
Have solution
The sum of four consecutive even numbers is 92. Determine these numbers.
Exhibition 4753
The carpenter has to attach slats for hanging paintings on the exhibition hall wall, which has a length of 39 m and 40 cm. The length of one bar is 2 m. Will 22 laths be enough for carpenters?
Two-digit 4750
My number for today: the product of the square of the smallest prime number with the smallest two-digit prime number
Five-sixths 4748
The metal rod measures 1.2 meters. How many decimetres is a quarter of a metal bar smaller than five-sixths of a metal bar?
Cubes
Carol with cut bar 12 cm x 12 cm x 135 cm to the cubes. Find the sum of all the surfaces of the resulting cubes.
Concrete pedestal
The carpenters made wooden mold on a concrete pedestal in the shape of a cube with an edge 2 meters long. What is the area in which the concrete touches wooden molds? (No lid or bottom)
Beginning 4743
Increase the number by half and reduce the result by half. No.9 will be released. What number did I have at the beginning?
Seventeen 4742
Seventeen workers produce more than 15 workers by 46 products. How many products will 20 workers make?
Calculate
Calculate the area of the ABE triangle AB = 38mm and height E = 42mm Ps: please try a quick calculation
Map scale
What is the map's scale if 5.4 km is 72 mm on the map?
Dimensions 4735
Calculate how many m² of wallpaper is needed to wallpaper a room with dimensions a = 3m, b = 4m, c = 3.5m
Construction 4727
Honza's kit included 19 wheels. He used them all to construct tricycles and scooters. How many complete scooters and tricycles did he build? He will find all the solutions.
Dalmatians 4726
Kamil bought 101 Dalmatians. Of these, 58 had a spot on the left ear, 15 had a black spot on the right ear, and 29 had both white ears. How much Dalmatian has black spots on both ears?
Gasoline
How many liters of gas is in the tank if its weight is 15.4kg? The specific density of gasoline is 770kg/m³.
MO Z6-6-1
Write integers greater than 1 to the blanks in the following figure so that each darker box is a product of the numbers in the neighboring lighter boxes. What number is in the middlebox?

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