Maths practice for 14 year olds - page 318 of 382
Number of problems found: 7626
- Cube edge
The block volume is 512dm³. How long is the edge of a cube with the same volume as a block? - Fraction denominator
Write a fraction with a denominator of 200 greater than 0.39 and less than a two-fifths fraction. Write its numerator x. - Unknown number
Find an unknown number: (9 + y) x 6 = 12 x 7 y =? - Big number
Dagmar typed numbers on the computer (without spaces) 45678910111213141516... Which number did she write in the third place? The digits of this large natural number are assigned natural numbers from four 4-5-6-7-8-9-10-11-12-13-14-15 etc. - without dashes - Class trip
Until VII. B class girls and 15 boys. All the girls and 13 boys went on a trip. It was a total of 92% of the students in the class. How many girls go to VII? B? - Grandchildren ages
When asked: "How old are your two grandchildren?" the grandfather answers: "If I add their sum to the product of their ages, I get 14." How old are the grandfather's grandchildren? Consider only whole years. - Draw
An old man is a beekeeper and wants to divide honey between his three grandsons. He has seven identical jars full of honey, seven jars half-filled, and seven empty jars. How should he divide the jars (without spilling) among the grandsons so that each get - Grandfather age
Dasha asked her grandfather, a good accountant, how old he was. He said: If you add 5 to my number of years and divide this sum by six, you will get the same result as subtracting 6 from my number of years and dividing this difference by five. How old is - Passbook amount
Mathias had a certain amount of money in the winning book. He won, and his stake increased by 100%. Mathias used half the money for a trip and donated what he won to his brother Jacob. How much is left in his passbook? - Natural numbers
Find all natural numbers that are twice as much as one-fifth plus nine. How many are there? - Groschens
The young journeyman bought a cloak, hat, and galoshes. He paid 200 grosz for everything. A cloak costs 90 groschen, more than a hat, and a hat with a cape costs 160 groschen, more than a galoshes. How much groschen did the cloak cost, and how many hats a - Tatra
A tourist climbed from a hut at an altitude of 1,367 m above sea level to the top of a Tatra peak. The trip there and back took him 6 hours and 20 minutes. What is the altitude of the mountain peak if the tourist climbed at 300 metres per hour going up an - Number sequence
Five natural numbers are given, each of which is a triple of the previous one. The largest number is bigger by 1152 than the middle number in this series. From these five numbers, determine the first number. - Fraction addition
Which same integer must we add to the reader and the denominator of the fraction 37/73 so that the fraction equals one-half? - Investment ratio
Three entrepreneurs decided to invest in a joint project in a ratio of 4:5:7. The largest deposit was € 3,430. How many euros did they invest together? - Number sum
The sum of the two numbers is 13. The third of the first number is three. What are the numbers? - Wood for paper
50% of pulp is obtained from wood and 60% from paper. How much wood is needed to make 100 tons of paper? - Price reduction
The washing machine originally cost 450 €, but the shop reduced it by 12%. After the second discount, it cost € 364.32. What percentage did it reduce for the second time? - Pears and cherries
Pears and cherries grow in the orchard. There are a total of 510 trees. Half of all cherries and a quarter of pears are just as many as all cherries. How many pears and how many cherries? - Chickens and kittens
There were chickens and kittens in the grandmother's yard. George found that if she added one more kitten, the number of kittens and chickens would be the same. But if she added five chickens to the original number, the kittens and chickens would have the
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