Maths practice for 12-year-olds - page 207 of 351
Number of problems found: 7018
- Employee illness
Out of 150 employees, six are sick. Everyone else was at work. What percentage were ill, and what percentage of employees were at work? - Area Rate Time
In 2 hours, 100 m square, what is an area in 3 hours? - Cook on gas
The gas cylinder will last 30 weekends for 2 hours of daily cooking. How many days will we be able to cook on a new cylinder when we cook for 3 hours a day? - Dance group
The dance group formed groups of 4, 5, and 6 members. Always one dancer remains. How many dancers were there in the whole group? - Clock Hand Angle Lunchtime
Lunch is served from 12:10 to 12:35. What angle will the little hour hand describe during this time? a) 12 ° b) 12.5 ° c) 13 ° d) 42 ° - Rectangle - WL in ratio
Find the length of a rectangle if the width is 28 cm and the length and width are in the ratio 7:4 (l:w). - Barter
There is exchange trade on the market. We know that for two sheepskins, we get three goat skins. We also know that we get four goat skins for six rabbit skins. How many rabbit skins do we get for four sheepskins? - Cyclists Average Speed Second
Cyclists drove the first half of the track at an average of 37.5 km/h in 1.4 hours. After the vertebrate, they walked the same distance 6 minutes longer. At what average speed did they drive on the vertebrate? - Fraction value calculation
Determine the value of the fraction 7/4 of the total of 8000. - Water tank
What is the height of the cuboid-shaped tank with the bottom dimensions of 80 cm and 50 cm if the 480 liters of water reach 10 cm below the top? - Last page
Two consecutive sheets dropped out of the book. The sum of the numbers on the sides of the dropped sheets is 154. What is the number of the last page of the dropped sheets? - Flower leaf drying
After drying 1 kg of flowers, 0.17 kg of dried flowers remained. After drying 1 kg of leaves, 0.46 kg of dried leaves remained. How many kilograms of water evaporated by drying 1 kg of flowers and 1 kg of leaves? - Book purchase cost A father bought books for his children's birthdays. Zdenka purchased the book for 24.60, and Milo bought the book 6.70 more expensive. How much did the father pay for both books?
- Thought number puzzle
When I add half of the thought number to 3/5 of the thought number, I get the sum of 22. Which number do I think? - Expression equality puzzle
For what values of x is the value of the expression 5x + 11 equal to that of the expression 7x + 31? - Expression value puzzle
Find for which x the value of the expression 13x - 7 is eight less than the value of the expression. 12x + 11. - Natural number sum
The sum of three natural numbers is 204. Each of them is five greater than the previous one. What are the numbers? - Dentist
Class 5. I participated in a preventive dental examination. A quarter of the pupils found two dental caries, and an eighth found one caries. Half the class had all their teeth healthy. How many students attend class 5? If four students were missing on the - Rectangle side measurement
One side of the rectangle is 8 cm long. When we enlarge the dimensions of this rectangle four times, we get a rectangle with a circumference of exactly 1 m. How many mm does the other side of the unmagnified rectangle measure? - Six percents
6% of the base is 21. How much is 28% of this base?
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