Maths practice for 12-year-olds - page 64 of 349
Number of problems found: 6962
- Satellite 81495
The satellite flies at a speed of 8 km/s. Will it fly down the runway in two seconds? - Threefold 81491
Find a number whose fivefold is 8 greater than threefold. - Indistinguishable 81481
How many ways can a tower of five yellow and four blue cubes be built so that each yellow cube is adjacent to at least one other yellow cube? Yellow dice are indistinguishable, and so are blue dice. - Fifteenths 81479
Little Aja planned to read the book, which has 120 pages, for 4 days. On the first day, she read a quarter of the whole book; on the second day, she had training and therefore only read two-fifteenths of the book; on the third day, she read seven-twentiet - Calculate 81406 Calculate the equation and do the test. (x+6)/2 - (x+4)/4 = (2x+1)/3 – (x-4)/6
- Simultaneously 81403
Cars left two places 520 km apart simultaneously at speeds of 30 km/h and 50 km/h. Where and when will they meet? - Calculation 81401
A regular four-sided pyramid has a volume of 2,160 liters and a base edge length of 12 dm. Calculate the height of the needle (sketch, calculation, answer). - Perimeters 81399
Two squares are given. The first has a side length of 5 cm, the second 10 cm. Write the ratio of: for a- of their sides for b- their perimeters for c- their areas - Notebooks 81398
Petr paid CZK 288 for 12 new notebooks. How much would he pay for 15 identical notebooks? - If we want
A children’s pool has the shape of a cylinder with a base diameter of 4 m and a depth of 50 cm (sketch, calculation, answer). a) Calculate the volume of water in liters that can be in the pool if it is filled to the brim. b) If we fill the pool only 75%, - Inventory of bottles
Determine the standard inventory of mineral water bottles for smooth operation if the restaurant needs 18,000 half-liter bottles per year. The delivery cycle of goods is 14 days. The minimum insurance stock is set at 5 days. How many liters of mineral wat - Revolutions of cylinder
The rotating cone has a volume of 120 dm³. How tall is a cylinder of revolution with the same volume as a cone of revolution? - Cube-shaped 81332
The gardener collects rainwater in a cube-shaped container with an edge length of 80 cm. How many 16-liter buckets will he fill with water from a full reservoir? - Cities 81317
The cities are 400 km apart; how many cm is it on a 1:400,000 scale map? - Percentage 81297
There are 13,000 spectators in the stadium. Five thousand eight hundred fifty sat. What percentage was seated? - Percentage 81296
Milan saved 120 euros per year, and Eduard saved 150 euros. By what percentage did Eduard save more? - Respectively 81293
The figure shows the squares ABCD, EFCA, CHCE, and IJHE. Points S, B, F, and G are, respectively, the centers of these squares. Line segment AC is 1 cm long. Determine the area of triangle IJS. Please help... - One-fifth 81290
One-fifth of the bridge pillar is embedded in the ground. One-third of its length is in the water, and 1.4 m protrudes above the surface. Determine the length of the bridge pillar. - Individual 81289 The rod was divided into three parts. The first part measured one-third of the length, the second one-third of the rest, and the third part was 20 cm. Calculate the rod's original length and the individual parts' lengths.
- Vegetables 81242
I spent a tenth in the store on vegetables and 3 times more on sweets. I have 60 euros left. How many euros did I have?
Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
