Maths practice for 12-year-olds - page 247 of 347
Number of problems found: 6923
- Rainfall
A rectangular garden of 25m in length and width 20m in width is filled with 4mm of water. Express by a fraction in basic form what part of the 60-hectolitre tank we would fill with this water. - Product Cost Weight Distribution
If you know that the company produces four similar products that differ only in the weight of the packaging, determine the final price of the product in terms of costs. The total cost of manufacturing the product was CZK 5,745,000. And 10 kg 15,000 pcs B - Parallelogram Height Area
Calculate the height of the parallelogram, which has an area of 2.31 square meters and a side of 15.4 cm. - Four Proportional Numbers
The first number is 50% of the second, the second number is 40% of the third, and the third number is 20% of the fourth. The sum is 396. What are the numbers? - Airplanes Meeting Distance
An airplane flew from city A to city B at a speed of 500 km/h. Fifteen minutes later, an airplane took off from city B to city A at a speed of 450 km/h. After 45 minutes, the planes met. Determine the distance between A and B. - Cars Meeting Speed
At 10:00 AM, two cars drove against each other from places 240 km away. One was driving at an average speed of 70 km/h. What was the speed of the other when they met at 11:30? - Number Three Quarters Greater
Find the number whose three-quarters is five more than its one-third. - Z7-I-5 MO 2017
Prokop constructed a triangle ABC whose interior angle at vertex A was greater than 60° and whose interior angle at vertex B was less than 60°. Juraj drew, in the half-plane determined by line AB and point C, a point D such that triangle ABD was equilater - Temperature Difference Celsius
Calculate the temperature difference if one temperature is 26 degrees and the other is -22 degrees Celsius. - The iron roller
The iron roller has a base circumference of 28 π cm. The worker drilled a hole through the top of the roller. After drilling, the given product had a 35% smaller volume than before. The hole's circumference in the base is equal to the height of the roller - Triangle shoulder length
The circumference of the isosceles triangle is 7.8 cm, and the base length is 34 cm. How long are his shoulders? - Rhombus Parquet Floor Area
The parquet floors in the room have the shape of a rhombus with a side of 2.3 dm long and a corresponding height of 0.9 dm long. How many square meters does the room have if its floor comprises 580 parquets? - Sides of triangle
The Triangle circumference with two identical sides is 117 cm. The third side measures 44 cm. How many cms do you measure on one of the same sides? - Garden Steps Adult Walk
The garden has a rectangular shape with dimensions of 25 m and 52 m. How many steps would an adult with an average step length of 75 cm go through the garden? - Steps School Distance Year
Eva takes 539 steps on her way to school. How many meters is it if he takes steps that are 4/7 meters long on average? How many kilometers does Eva "walk" during one school year on her way to and from school? - Hunt catch
Hunters shot the same number of pheasants as hares on the hunt. Together, they had catches of 408 feet. How many hares were there? (Suppose no animal was handicapped.) - Seamstress
The seamstress cut the fabric into three parts. The first part was the eighth fabric, the second part was three-fifths of the fabric, and the third part had a length of 66 cm. Calculate the original length of the fabric. - Exhibitor count
Last year, five fewer exhibitors participated in the Autosalon exhibition. This year there were a fifth more than last year, i.e., 150 exhibitors. How many exhibitors participated in the motor show the year before? - Grandfathers Age and Grandchildren
Michael's grandfather has 4 grandchildren. During this year's celebrations, he discovered that he is 7 times older than Michael, six times as old as Wes, four times as old as Emil, and three times as old as John. This situation can only happen once in a l - Two-Digit Numbers Multiply Four
Write how many double-digit numbers there are, which, if we multiply by four, we get the result ending in two zeros.
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