Maths practice for 12-year-olds - page 149 of 350
Number of problems found: 6985
- Barrel-shaped 40601
The barrel-shaped cylinder has a volume of 9.42 hl, and the inner diameter of the bottom is 12 dm. Calculate the area of the barrel shell in m². Solve in general first. - Divisors 40571
All common divisors of headings 90 and 48 - Together 40541
The first bus leaves every 10 minutes, the second every quarter of an hour, and the third every 18 minutes. At noon, all three lines left together from the station U Kachny. At what time did all the lines go again at the same time? - Purchases 40501
The Kováčov family makes a purchase at a nearby store once a week for €45. After the opening of the new shopping center, the family's monthly purchases are a tenth cheaper. Calculate how many euros the Kováčovci will pay per week for shopping after the op - Students
There are 2/6 girls out of 1050 students at the school. Of these, 4/5 have another sibling. How many girls are in school? How many boys are in school? How many girls do not have a sibling? - Minutes 40411
What path will the end of the second hand make in 24 minutes if it is 5 cm long? - The quotient 2
The quotient of the quantity k minus 10 and m. - The box
Does the box contain three light bulbs with a wattage of 40 W and two pieces of light bulbs with a wattage of 60 W. What is the probability of the event that two randomly selected light bulbs will both be 40 W? - They competed
On April 1, the seventh graders competed for the worst written dictation. The winner was Jožo Poleno, who left out a letter in a third of the words of the dictation, made boldface in a quarter, forgot the soft part in a sixth, and despite all his efforts - The volume
The volume of the rotating cone is 376.8cm³. The height of this cone is one dm. Calculate the diameter of the cone base. - Signs 40171
Fill in the signs to apply 5 5 5 5 5 = 14 - Simultaneously 40161
Two differently set metronomes used in music education to keep rhythm were started simultaneously. The first beeps after 3 seconds and the second after 7 seconds. How often will the beep sound together between the 1st and 2nd minutes? - Graduates 40111
As many as 62.5% of residents at the business academy graduated with honors. How many high school graduates would there be if 30 students graduated with honors? - Pizza fractions
Ann ate a third of a pizza and then another quarter. Total part of pizza eaten by Ann and how much pizza is left? - Consumption 40011
Karel calculates the consumption of paint for coating the floor in the clubhouse. The clubhouse is 3.4 m long and 2.5 m wide. 0.7 kg of paint is used per 1 m². One can contain 0.8 kg of paint. Calculate the total consumption of paint. How many cans of pai - Calculate 39981
The land on which the car service stands is shaped like a trapezoid with bases 98m and 76m long. The distance from the bases is 64m. Calculate the price of the land; if 1 m² of land costs 14 €? - Thousandths
If you have a number 0.08, what is the form in thousandths? - Two-fifths 39881
Jarmila bought a book for two-fifths of her money, leaving her with CZK 75. a) How much CZK did Jarmila initially have? b) How much did the book cost? - Five-twelfths 39871
Five-twelfths of the students in the class learn English, a third learn German, a sixth learn French, and two students learn Spanish. How many students are in the class, and how many languages are they learning? - Pepíček 39811
Pepíček went to school on the first day. Dad made him a paper cone for sweets in the shape of a cone with a side length of 50 cm and a base radius of 10 cm. How many cm² of paper did he need to make the cone?
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