Maths practice for 12-year-olds - page 216 of 351

Number of problems found: 7018

At a party
At a party 12 guests left their shoes in the hallway. In total there were 6 pairs of men's shoes, 6 pairs of women's shoes, 6 pairs of brown shoes, 6 pairs of black shoes. After the party it was found that some of the shoes had disappeared. 5 men's and 5
Gas Air Weight Ratio
One m³ of air weighs 13/10 kg, and the same volume of natural gas weighs 4/5 kg. How many times lighter is the gas than air?
Aquarium Depth Volume
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?
Block Volume Surface
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?
Prime inequality solutions
How many prime numbers are the inequality solutions: x / 3> x - 8?
Linoleum cost discount
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?
Opposite direction distance
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?
Cyclist meeting distance
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?
Cyclist speed calculation
The cyclist completes the 3600 m long route in 12 minutes. Calculate its speed in km/h.
Tourist average speed
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.
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?
Three Consecutive Natural Numbers
Determine the sum of three consecutive natural numbers such that the sum of the first and third numbers is 368.
Consecutive integer sum
The sum of four consecutive integers, five greater than the previous one, is 2. Find these numbers.
Erika Renata money
Erica has 126 euros. Renee has only a third of Erica and Hannah, 12 euros less than Renee. Hannah then has?
Number series sum
The difference between every two adjacent numbers equals three in a series of four numbers. The sum of these numbers is 60. Specify these numbers.

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