Math practice for 13 year olds - page 259 of 428
Number of problems found: 8556
- Wallet Banknotes Count
My mother had CZK 1,550 in her wallet in CZK 100 and CZK 50 banknotes for 21 pieces. How many banknotes were there? - 1.5 divided
1.5 divided by 1 = w divided by 4 - Rubber ball purchase
The municipal authority purchased 36 large and 25 small rubber balls for the children in the kindergarten. They paid as much for two large balls as for five small ones. The invoice was issued for CZK 5,980. How much did the big ball cost? - Number summand division
Divide the number 4600 into two summands so that one summand is 700 larger than half of the other summand. - Cylinder height
Calculate the height of the cylinder and its surface is 2500 dm2, and the bases have a diameter of 5dm. - Square sides
If the square side increases by 28%, the square circumference increases by 11.2 meters. Find the length of the original square side. - 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? - 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 wheel turns
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? - Mother Children Shopping Puzzle
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? - Total Distance Traveled
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. - School supply cost
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?
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