Maths practice for 12-year-olds - page 184 of 347
Number of problems found: 6923
- Ratio of counts
There are 15 boys and 13 girls in the class. What is the ratio of boys and girls? - Salary ratio change
They changed my mother's original salary to 750 euros in a 6:5 ratio. How many euros is he earning now? - Gold carat calculation
I have a pile of 48 grams of 12-carat gold. How many grams of gold do I have in a pile? - Block height calculation
What is the height of a block whose base edges are 12 centimeters long and 6 centimeters long if its volume is 360 cubic centimeters? - Calculate S,V
Calculate the volume and surface area of the sphere if given r = 36 mm. - Corresponding height
Calculate the height corresponding to the side of the parallelogram ABCD if the side is 7.4 cm long and the area of the parallelogram is 33.3 cm2 - Body volume calculation
When the body was immersed in a cylindrical vessel filled with water, the water level in the vessel rose by 28 mm. Calculate the volume of the immersed body if you know that the diameter of the bottom of the container is 8 cm. - The temperature 5
The temperature at 4 pm was 53°Fahrenheit. The temperature dropped 3° each hour from 4 pm to 9 pm. Which equation below accurately represents the temperature at 9 pm? . - The outdoor
The outdoor temperature was 60 degrees Fahrenheit at midnight. The temperature went down 3 degrees each hour for the next 4 hours. What was the temperature at 4 AM? - Consecutive natural sum
The sum of three consecutive natural numbers is 864. Determine the smallest of them. - Consecutive even sum
The sum of eight consecutive even natural numbers is 1,688. Determine the largest of the numbers. - Simplest form
Find the simplest form of the following expression: 3 to the 2nd power - 1/4 to the 2nd power. - Identical line
In which triangles is the line identical with the height? - Lotto winnings distribution Three friends submitted a lotto for €600. Karel gave €250, Laco €200, and Josef gave the rest. They won €15,000 and shared the winnings in the same proportion as they contributed to the sport. How many euros did Josef receive?
- Map distance calculation
Calculate the actual distance on a map of 2 cities, which is indicated on the map by a line 6 cm long. - Circle circumference calculation
Calculates the circumference of a circle if its area is S = 2119.5 cm². - Barrel bucket filling
The barrel-shaped barrel has a base diameter of 6 dm and a height of 1.2 m. How many 5-liter buckets will we fill to 3/4 height? - Cylinder height surface
The volume of the cylinder is 193 cm³, and the radius of its base is 6.4 cm. Calculate the height and surface of the cylinder to 1 decimal place. - Fraction sum puzzle
The sum of its quarter and its five-twelfths is (-1/3) - Cylindrical container
The cylindrical container has a height of v = 85 cm. The diameter of the container is 8 cm. How many liters of water will fit in this container when it is half full?
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