Maths practice for 12-year-olds - page 246 of 307
Number of problems found: 6128
- Master work
The master will complete the given task in 4 hours. When they're done together, how long will it take to master students entirely in three hours? - Canister
Gasoline is stored in a cuboid canister having dimensions 44.5 cm, 30 cm, and 16 cm. What is the total weight of a full canister when one cubic meter of gasoline weighs 710 kg, and the weight of an empty canister is 1.5 kg? - Surface and volume od cuboid
The square base of the cuboid has an area of Sp = 36 cm2, and its height is 80 mm. Determine its surface area and volume. - One-thirds 3606
They baked one-third of the flour on the first day in the bakery and used 75% of the rest the next day. On the third day, 120 kg of flour remained. How much flour did they have in the beginning?
- Square glass
What is the square window glass area with the side 4 dm? Do you know how many cm² is? - Gingerbreads 3599
Janko and Marienka ate 36 gingerbreads together. Janko ate 14 more gingerbread. How many gingerbreads did Marienka eat? How much did Janko eat? - Playing match
Romania played a match against Canada. Canada won the duel by six goals. They scored a total of ten goals in the game. Find the number of goals scored by Romania. - Released 3593
The Harry Potter book was released in the second quarter, and 6,000 copies were sold in this quarter. In the third quarter, it sold 8% more and in the fourth quarter it sold 15% more than in the third quarter. How many Harry Potter books have been sold by - What 3592
What is 15% of 30% of 600?
- Circumference 3589
Calculate the circle's radius if the circumference and area are in a 2:5 ratio. - Switzerland 3584
Zuzka and Hanka used to work in a cherry orchard to earn money for a sightseeing trip to Switzerland. They brushed 15 trees every day and harvested the entire orchard in 10 days. How long would it take them to harvest the entire orchard if they brushed 20 - Charles Bridge
From 1900 to 1931, Charles Bridge was 15 times older than Frantův Bridge. How old is the Charles Bridge? - Rectangles 3579
I need to fill a circle with a diameter of 4900 cm with how many rectangles, 125x60 or 100x50 cm. - Proportion
Write the following proportion: Eight is to 64 as to 2 is to x
- Distance 3575
The distance between the two cities is 25km. This distance was drawn on the map by a line 5 cm long. What is the scale of the map? - Broken tree
The tree is broken at 4 meters above the ground. The top of the tree touches the ground at a distance of 5 meters from the trunk. Calculate the original height of the tree. - Perimeter 3573
The carousel wheel has a diameter of 138 meters and has 20 cabins around the perimeter. What circuit does the bike have? - Options 3572
We roll three dice. Write down all the feast options. - Hectoliter into cube
Can 1 hl of water fit into a half-meter cube?
Calculate to two decimal places. What percentage is: a / 15min from 4 h b / 35 cm² of 12.5 dm² c / 2 dm² of 400 cm² d / 0.2 l of 2.2 lDo you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
