Maths practice for 12-year-olds - page 97 of 355

Number of problems found: 7081

At a party
There are 16 people at a party, and 3/4 of the people drink orange juice. How many people drink orange juice?
Learnes
There are 800 learners in a school 7/8 of the learners walk to school. How many learners walk in school?
Wooden 3
A wooden board 2.5 m long has a cross-section in the shape of a regular trapezoid whose parallel sides have lengths of 1.2 dm and 8 cm. The height of the trapezoid is 3 cm. Calculate: a) the surface area of the board to calculate the consumption of stai
Cottage temperature evening
They measured a temperature of +2 degrees Celsius at noon on May 5 at the cottage near Popradsky Lake. For dinner, it dropped 10 degrees Celsius. How many degrees were there in the evening?
Sofia
Sofia has 6 candy bars. She gives her friend 4/5 of a candy bar and eats 2 1/9 candy bars. About how many candy bars does Sofia have left?
A rectangular 6
A rectangular sheet of paper is 6 2/3 cm long and 4 1/2 cm wide. Find its perimeter.
Gabika party outfits
Gabika wants to wear pants, a blouse, a skirt, and a T-shirt to the party. She has two pairs of pants, 3 blouses, 3 skirts, and 4 T-shirts to choose from. How many parties can she attend if everyone wants to go dressed differently?
Strawberries
In a class of 45 students, 1/3 of the students are girls. If 1/3 of the girls enjoyed eating strawberries and 1/5 of the boys enjoyed eating strawberries, how many students in a class enjoyed eating strawberries?
Rod ratio division
How do you divide a 3m long rod in a ratio of 1:5? Specify the length of both parts in cm.
Car kinetic energy
The car weighs 1850 kg and increases its speed from 27 to 81 km/h. How much has its kinetic energy increased?
Angle complement determination
Determine the angle ϕ: ϕ + 71 ° 15 '= 90 °
Hands coincide
In how many minutes after the second hour do the clock hands coincide?
Plot fence comparison
How many meters is more mesh needed to fence a plot of parallels with dimensions of 50m and 40m than to fence a plot of diamond-shaped land, the side of which is 40m long?
Steel bar cutting
We must cut three steel bars with 24 dm, 3 m, and 160 cm lengths into equal lengths. Find their maximum length and number.
Hexagon angle size
Determine the size of the ACF angle in the regular ABCDEF hexagon.
Laura bike route
Laura went for a new bike ride. In an hour, her father followed her on the same route at 60 km/h speed and overtook her in 1/2 hour. a) Find the length of Laura's route in kilometers before her father catches up with her. b) Determine in kilometers per ho
Calculate radius
The surface of the sphere is 624 cm². Calculate its radius.
The product
If the product of two numbers is 108025 and one of the numbers is 25, then the other number is:
Three-digit digit sum
How many three-digit numbers have a digit sum of 6? Write the ratio of the number of created even and odd numbers and adjust it to the basic form.
A landscaper 2
A landscaper has 1/8 ton of dirt. She distributes it equally across two plots of land. What fraction of the dirt does each plot get?

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