Maths practice for 12-year-olds - page 215 of 348

Number of problems found: 6951

Cylindrical 7603
What is the diameter of a cylindrical container if half a liter of water reaches a height of 12 cm?
Divide 5
Divide number 288 by the following ratio of 3:4:5.
Melting point
The melting point of mercury is -36°F, and its boiling point is 672°F. What is the difference between the boiling point and the melting point?
Find unknown
Find an unknown numerator: 4/8 + _/8 = 1
Aquarium 7588
The aquarium has a length of 0.7m and a width of 25cm. If it does not reach more than 87.5 liters of water, what is its depth?
Calculate 7587
Calculate the volume and surface of a block 3 cm wide, 6 cm long, and 8 cm high.
Cupcakes 2
Susi has 25 cupcakes. She gives 4/5. How much does she have left?
Inequality 7581
How many prime numbers are the inequality solutions: x / 3> x - 8?
Rectangular 7578
My aunt paid CZK 2,592 for linoleum in a 15 meters long rectangular hallway. How much did 1m of linoleum cost? The following month, linoleum was discounted by a third. How many crowns could the aunt save if she bought it a month later?
Fahrenheit 2 Celsius
If the temperature is 86 degrees Fahrenheit, what is the same temperature in Celsius?
Simultaneously 7571
A pedestrian and a cyclist left the town of S simultaneously but in the opposite direction. Pedestrian at 4.4 km/h, cyclist at 18 km/h. How far apart are they after 1 hour and 42 minutes?
Another 7568
A cyclist leaves town A, 84 km from town B, and 2 hours later, another cyclist goes from town B to town A at the same average speed of 14 km/h. How far from city B will they fight?
8 degrees
Eight degrees Celsius, then cools down by 9 degrees Celsius. What is the resultant temperature?
Gasoline price
At 34.4 cents per liter, how much will 42 liters of gasoline cost?
Completes 7557
The cyclist completes the 3600 m long route in 12 minutes. Calculate its speed in km/h.
21-kilometer 7555
A tourist moving at the same pace completes a 21-kilometer hike in 4 hours, taking a 30-minute break. Calculate the average speed of tourists.
Direction 7554
A freight train departs from one station at an average speed of 36 km/h. 2 hours later, personal pressure leaves in the same direction at an average speed of 48 km/h. After how many hours will the passenger train catch up with the freight train?
Noontime
In the morning temperature was 110°F. By noontime, it has gone up by 15°F. What was the noon temperature? (Give your answer in °F)
Recipe
A recipe requires 2 pounds of flour. If a chef wants to triple the recipe, how many ounces of flour will be needed?
Consecutive 7551
Determine the sum of three consecutive natural numbers such that the sum of the first and third numbers is 368.

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