Math practice for 13 year olds - page 339 of 424

Number of problems found: 8464

Gingerbreads 3599
Janko and Marienka ate 36 gingerbreads together. Janko ate 14 more gingerbread. How many gingerbreads did Marienka eat? How much did Janko eat?
Together 3598
Adam, Boris, and Cyril have CZK 21 together. Adam and Boris together have CZK 11, and Boris with Cyrillic CZK 13. Adam has. ... ..CZK, Boris. ... ... CZK and Cyril. ... .CZK.
Playing match
Romania played a match against Canada. Canada won the duel by six goals. They scored a total of ten goals in the game. Find the number of goals scored by Romania.
Netherlands 3595
Italy, the Netherlands, and Spain scored 67 goals in the tournament. The Netherlands scored two more goals than Italy, and Spain scored one goal less than Italy. Determine the number of goals.
Released 3593
The Harry Potter book was released in the second quarter, and 6,000 copies were sold in this quarter. In the third quarter, it sold 8% more and in the fourth quarter it sold 15% more than in the third quarter. How many Harry Potter books have been sold by
What 3592
What is 15% of 30% of 600?
Circumference 3589
Calculate the circle's radius if the circumference and area are in a 2:5 ratio.
Trapezium
The area of trapezium is 35cm². Find its height if the bases are 6cm and 8cm long.
Switzerland - summerjob
Zuzka and Hanka used to work in a cherry orchard to earn money for a sightseeing trip to Switzerland. They brushed 15 trees every day and harvested the entire orchard in 10 days. How long would it take them to harvest the entire orchard if they brushed 20
Discount 3583
The TV cost € 420 after a 9% discount. How much did he cost before the discount?
Pool
The pool is a cylinder with a diameter of 4.6 m and a presumed height of 130cm. The bucket holds 12 l of water. How many buckets do you have to bring to fill this pool?
Diagonals 3580
Cube edge length 5cm. Draw different diagonals.
Rectangles 3579
I need to fill a circle with a diameter of 4900 cm with how many rectangles, 125x60 or 100x50 cm.
Proportion
Write the following proportion: Eight is to 64 as to 2 is to x
Numbers
a/ I think of a number. If I add 6 to it three times, I get it five times. Determine this number. b/ I think of a number. If I add 8 to its six times, I get a number that is 10 less than its fifteen times. c/ I think of a number that, when increased by 6,
Broken tree
The tree is broken at 4 meters above the ground. The top of the tree touches the ground at a distance of 5 meters from the trunk. Calculate the original height of the tree.
Options 3572
We roll three dice. Write down all the feast options.
Vacation 3568
Novak and Vyborn are leaving from a joint vacation. They agreed that when they were 100 km apart, they would send each other SMS. Novices drive at a speed of 60 km/h, Advanced 90 km/h. They left at 2:00 PM (14:00). What time do they text each other?
Parallelogram 3567
One side of the parallelogram is 5 cm. Can it have 3 cm and 6 cm diagonals?
Percentage 3566
Calculate to two decimal places. What percentage is: a / 15min from 4 h b / 35 cm² of 12.5 dm² c / 2 dm² of 400 cm² d / 0.2 l of 2.2 l

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