Maths practice for 12-year-olds - page 182 of 355
Number of problems found: 7084
- Identical cubes
From the smallest number of identical cubes whose edge length is expressed by a natural number, can we build a block with dimensions 12dm x 16dm x 20dm? - Interior angles
Calculate the interior angles of a triangle that are in the ratio 2:3:4. - Largest squares
How many of the largest square sheets did the plumber cut the honeycomb from 16 dm and 96 dm? - Cone base
Calculate the circumference of the cone base; round the result to millimeters. If you know: radius 24 mm and height 46 mm. - Box and cubes
We have a box with dimensions of 20cm, 16cm, and 8cm. How many cubes can fit in it if the cube has a size of 4cm? - Consecutive number LCM
Find the LCM of four consecutive natural numbers. Its sum is 42. - The farmer
The farmer calculated that the supply of fodder for his 20 cows was enough for 60 days. He decided to sell two cows and a third of the feed. How long will feed the rest of the peasant's herd last? - Screw weight calculation
There are 80 screws in the box with a total weight of 1.24 kg. The weight of one screw weighs 400g. Screw weight calculated in grams - Stadium perimeter steps
How many steps does a person mow a rectangular football stadium around its perimeter? The dimensions of the stadium are 100 m and 50 meters. The length of a person's stride is 75 cm. - The hollow cylinder
The hollow cylinder has a height of 70 cm, an outer diameter of 180 cm, and an inner diameter of 120 cm. What is the body's surface, including the area inside the cavity? - Pool water height
The pool has sides of 5m and 2m, and the water level is 100 hl. Calculate the height of the water in the pool. - Brownies
Mrs. Merritt made brownies, and the recipe had to be cut in 1/2. The recipe called for 2 5/8 cups of sugar. How much sugar did she use? - Tank gasoline remaining
The tank originally had 7 m³ of gasoline. We gradually pumped out 3hl, 3000dm3, and 700 liters of gasoline. How many liters of petrol is left in the tank? - City map distance
The cities of Košice and Prešov are 39.5 km apart. What will be their distance on a map with a scale of 1:5000000? - Bottles
The weight of 17 bottles is 91.7 kg. What is the weight of 1 bottle? - Numbers and digits
How many digits are in the numbers 1 to 100? - Two-day trip
Katy got a pocket trip for a two-day trip. She spent 3/5 on the first day and half the rest on the second. She brought home € 8. How many euros did Katy receive as pocket money? - Tile rectangle assembly
A bricklayer has 48 tiles. How many different rectangles will he assemble? - Job applicants
Job applicants: three-fourths of applicants had experience in a position. The number that did not have prior experience was 36. How many people applied for the job? - Square plot paving
We will pave a square plot of land from rectangular tiles with 25 cm and 30 cm dimensions. What is the smallest square plot we can pave with these tiles without cutting them?
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