Maths practice for 12-year-olds - page 224 of 348
Number of problems found: 6953
- Josef 6988
Josef had three balls less than Jan. They bet ten balls, and Josef won. Who has more balls now? - Supplementary angles
One of the supplementary angles is larger by 33° than the second one. Calculate the angles sizes. - Circumference - trapezoid
Calculate the circumference of the trapezoid if the lengths of the sides are as follows: a = 26 cm, b = square root of 50, c = 9 cm, d = 13 cm. - Edges or sides
Calculate the cube volume if the sum of the lengths of all sides is 276 cm. - Athletes
At the stadium, athletes could enter two-steps, three-steps, four-steps, five-steps, and six-steps. There were more than 100 but less than 200. How many athletes were there? - Ping time
Calculate the theoretical ping time between Orlando and Shenzhen, which is 14102 km distant. Ping time measures the round-trip time for small messages sent from the origin to a destination that is echoed back to the source. The name comes from active sona - Phone plan
Victoria's cell phone plan costs $30.00 a month. How much did Victoria pay per minute if she used 12.5 hours in May? - Perimeter of square
The square has a circumference of 17cm. What is its area? - Water level
How high is the water in the swimming pool with dimensions of 37m in length and 15m in width if an inlet valve is opened for 10 hours, flowing 12 liters of water per second? - Calculate rectangle
Calculate the unknown dimension in the rectangle if you know: S = 51.66 square meters, and = 8.2 square meters - Given
Given 2x =0.125, find the value of x - Evaluate expression 2
Evaluate expression with negatives: (-3)+4+(-8)+(-6)+4+(-1) - Workers 9
If two workers fix two windows in an hour, how many windows can 18 workers fix in the same two windows? - Rectangle 6946
The triangle has a base of 7 cm and a height of 6 cm. The rectangle has one side of 10.5 cm and the same area as the triangle. What is the length of the other side of the rectangle? - Temperature conversion
The average human body temperature is 98.6 degrees Fahrenheit. What is the temperature in degrees Celcius? - Prepare 6932
To prepare 40 buns, we need 3 dl milk, 3 dags of yeast, 6 g of sugar, 0.5 kg of flour, 4 spoons of oil, and 1 egg yolk = 15 g. After baking, the buns are filled with filling, for which we need 36 g of cheese, 20 dag of butter, and 200 dag of cream. How mu - Quarter of a circle
Calculate the circumference of a quarter circle if its area is S = 314 cm². - Calculate 6930
Calculate the diameter of a circle whose area S = 78.5 cm². - Circumference 6929 Two-thirds of the circumference of the circle is 12π cm long. Calculate the area of the circle.
- Collect rain water
The garden water tank is cylindrical, with a diameter of 80 cm and a height of 12 dm. How many liters of water will fit into the tank?
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