Math practice for 13 year olds - page 287 of 420
Number of problems found: 8399
- Michaell Erika savings
Michaell and Erika saved € 30. Erika saved five times more than Michaell. How much did Erika save? - Toy cubes
From children's wooden cubes in the shape of a prism with a square base (the side of the base is 4 cm long, the height of the prism is 8 cm) a fortress is built with towers made of two cubes on top of each other ending in pyramids with the same base as th - Constructing a Square
Construct a square if u-a = 1 - Cube Cut Surface Increase
We cut the cube with two mutually perpendicular cuts, each parallel to one of the cube's walls. By what percentage is the sum of the surfaces of all cuboids created in this way greater than the surface of the original cube? - Ninth Grade Student Count
9th-grade students were marked 28 students. ... .1 25% of students. ..2 40% of students. ..3 How many students were there in the 9th grade? - Necklace cost
For the opening ball of the season, the president's wife bought a necklace with a bracelet for 768 euros. How much did the necklace cost, and how much did the bracelet cost if the bracelet was 40% off a) cheaper, b) more expensive than the necklace? - Profit per kilo
The trader sells apples at a profit of 20% per kilogram. Today, he decided to reduce the price of apples by 10%. How much profit does the trader have today? - Fraction Multiply Smaller Number
Which number, in the form of a fraction, needs to be multiplied by 40 to get a 6% smaller number? - Expected Application Count
2600 pupils applied for admission interviews, which was 130% of the expected number. How many applications were expected? - Pool inlets
The pool is filled with three inlets in 12 hours. In how many hours would this pool be filled with five inlets? - ABCD square
In the ABCD square, the X point lies on the diagonal AC. The length of the XC is three times the length of the AX segment. Point S is the center of the AB side. The length of the AB side is 1 cm. What is the length of the XS segment? - Isosceles from square
How many isosceles triangles form in a square when we mark all diagonals? - Charity
Tereza earns 50% more than she spends each month. Patricie earns the same as Tereza but spends 20% less than Tereza. Each of them sends a fifth of her unspent money to a children's home account each month. How much more or less does Patricie send than Ter - TV Purchase Borrowed Percentage
Uncle decided to buy a TV for € 200. He had € 34 in cash. He borrowed the remaining amount. What percentage of the borrowed amount was from the price of the television? - Wheat harvest
One combine harvester harvests a wheat field in 12 hours, and another combine harvester in 16 hours. How long does the same field harvest the third combine harvester alone if all three harvesters harvest the wheat field in 2 hours? - T-shirt Discount Price
The T-shirts were discounted by 30%, so the three T-shirts cost only CZK 50 more after the discount than the two T-shirts cost before the discount. How much did one T-shirt cost before the deal? - Square inscribed
Find the length of the side of the square ABCD, which is inscribed to a circle k with a radius of 10 cm. - Finding Unknown Number LCM
I reduced the unknown number by five and multiplied the result difference by three. Finally, I increase the resulting product by six and get the least common multiple of the numbers 3 and 8. Calculate the unknown number. - Tulips Daffodils Garden Count
There are 20 more tulips than daffodils in the garden. How many tulips bloom in the garden when there are 70 flowers? - Clock Hand Tip Path
The tower clock has a small hand 1 m long. What path will the tip of the little hand describe in 1 day?
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