Math practice for 13 year olds - page 259 of 424

Number of problems found: 8474

Money spending
Milan got a certain amount of money for the trip. 1/6 spent postcards, 1/4 on refreshments. He bought his brothers a gift for 140 Euros. How many euros did he receive?
Working together
One worker performs work in 3 days, the second in 5 days. How much do they work together?
Letters
ABC + DEF = GHIJ replace letters with numbers so that the sum is correct (different letters = different numbers)
Find sales tax
What is 8.25% sales tax out of 1607.00?
Two workers
The first worker would complete the work in 8 hours, the other in 6 hours. After two hours of joint work, the worker left the first worker to a doctor, and the others completed the work themselves. How many hours worked did the other worker himself?
Chocolates
How many ways can we distribute eight different chocolates to four children?
Difference 7359
The apartment on the first floor has an annual rent of 10% higher than the same apartment on the second floor. The difference in the yearly rent is €105. What are the annual rent for the apartment on the first floor and the apartment on the second floor?
Two trains
From station A, the freight train traveled at a speed of 40 km/h in 9 hours. When he drove 15km, the fast train started from station A in the same direction at 70km/h. When will the freight train catch up?
Boats
Three-quarters of boats are white, 1/7 are blue, and nine are red. How many boats do we have?
Tractor's 7352
The tractor's rear wheels have a diameter of 1.25 m, and the front wheels have a diameter of 55 cm. What is its speed? How many times does each wheel turn on a 1.5 km track?
Children 7350
Mom sent half of her children and half a child shopping. Only one of her children remained at home. How many children does my mother have?
Traveled 7349
They walked 5 km through the forest, 3/4 around the lake, and 25% in the shade. How many km have they traveled in total?
Hexagon in circle
Calculate the radius of a circle whose length is 10 cm greater than the circumference of a regular hexagon inscribed in this circle.
Notebooks 7347
A notebook costs euros, a pencil c euros, and a ruler costs as much as a notebook and a pencil together. How much do you pay for three notebooks, seven pencils, and two rulers?
Combinations 7
A multi-course meal has three choices. Three appetizers, four main courses, and three desserts. How many different combinations to choose from?
Renovate 7342
The first company would renovate the complex in 30 hours. Another company would fix it in 20 hours. But the first company left after 5 hours of joint work. How long will it take to renovate the site?
Particular 7338
Two workshops of a particular company produced 25 parts a day. To have 300 pieces, one worked for ten days and the other for 15 days. How many parts did each workshop make per day?
Construction 7337
A smaller car would bring 40 times the material needed for construction, and a larger car 30 times. When the first and second cars had made 12 trips, the smaller car was recalled, and the larger one was to bring the remaining material. How many more roads
Half-filled 7336
The water tank is filled with the first inflow in one hour and 10 minutes and the second in 60 minutes. How many minutes will the tank be half-filled with both inlets if the second outlet is opened 12 minutes later?
Calculation 7334
In a computer center, one computer would work 12 hours to solve a task, and another, more powerful, would solve the same task for 10.5 hours. If both computers work together, the calculation time would be reduced for a certain period. Calculate how long i

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