Maths practice for 12-year-olds - page 253 of 351
Number of problems found: 7011
- Winning 5563
Filip and Dušan agreed that they would score 20 points for winning five in a row and -10 points for losing. Dušan lost eight times out of 10 games and won twice. How many more points does Filip have?
- Cross-section 5558
How many m² of sheet metal is needed to cover 4 m high chimneys with a rectangular cross-section with 2.5 m and 1.2 m dimensions? Add 1/20 to the folds.
- Colored paper
Can a 4 cm, 3 cm, and 2 cm block be glued with a colored quarter of paper measuring 7 cm and 8 cm?
- Block-shaped 5556
Excavated soil increases the pile's volume by 1/3. Can a 6 m, 2.5 m, and 1.8 m truck body be used to transport excavated soil to a 5 m, 2 m, and 1.5 m block-shaped pool?
- Bed time
Tiffany was five years old; her weeknight bedtime grew by ¼ hours yearly. If her curfew time at age 18 is 11 p.m., what was her bedtime when she was five years old?
- Participate 5543
The dance group is preparing for a performance. The program includes dances in pairs, fours, and fives. How many members does a group have to have to dance all these dances and have all their members participate in each dance?
- Gardeners 5542
Three gardeners mow the meadow for a while. Four gardeners can do it half an hour earlier. How long will it take five gardeners to do it?
- On Children's
On Children's Day, the organizers bought 252 chewing gums, 396 candies, and 108 lollipops. They want to make as many of the same packages as possible. Advise them what to put in each package and how many packages they can make this way.
- Hour salary
You work for 4 hours on a Saturday and 8 hours on Sunday. You also receive a $50 bonus. You earn $164. How much did you earn per hour?
- Pamela
Lara Pamela spends her salary of 3000 on food, clothing, recreation, and savings, which are in the ratio of 48:20:15:37, respectively. How much does he spend on savings?
- Suzan
Susan's age will be after 12 years, four times as much as twelve years ago. How old is Susan now?
- Crates of apples
Miro tore three and a half crates of apples in two and a quarter hours. How many crates will it tear in one hour? How long will he have to tear to meet the daily standard of 10 crates?
- Brought 5527
In the evening, four ants counted the crumbs they had brought. The first ant had 1.5 times more than the second, the second ant twice less than the fourth and the third ant twice more than the second. They had 26 crumbs in total. How many crumbs did the t
- Three-digit 5524
Six cards with digits 1, 2, 3, 4, 5, and 6 are on the table. Agnes made a six-digit number from these cards, divisible by six. Then she gradually removed the cards from the right. A five-digit number divisible by five remained on the table when she remove
- Three-fifths 5520
Mrs. Janka bought washing powder that weighed 5 kg. The powder is enough for 50 washes. However, she decided to fill the measuring cup with powder only three-fifths of the volume. How many washes does the powder last for her?
- Ľé sweets
There are 20 sweets in the bag. Some are chocolate, other coconuts, and the remaining marzipan. Chocolate is four times more than coconut. Marzipan's less than chocolate. How much is in a bag of coconut sweets?
- Clocks 5511
What angle do the clocks make at 4:30?
- Deca-kilogram
70g of yeast is needed for 30 days of flour. How many dags of yeast are required for 1.5 kg of flour? (note: the decagram has the mark dag and not dkg - it would be a deca-kilogram)
- Parallelogram 5509
The parallelogram has a side 6 cm long, and the height on this side is 4 cm long. What is the height of an isosceles triangle with a base 6 cm long and the same area?
- Soccer ball
How much does a soccer ball cost, and 6/7 of the price is € 12?
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