Natural numbers + equation - practice problems - page 6 of 23
Number of problems found: 442
- Students 81563
Sixth, seventh, and eighth graders took part in the school trip. Sixth graders were 5 more than seventh graders, and eighth graders were 3 less than sixth graders. How many sixth graders were on the trip if there were 73 students in total? - Including 71274
We used 1533 digits to number the rough book. How many pages does this book have if each page, including page 1, is numbered? - Collection 67874
In his stamp collection, Radek had half of the Czech stamps, a third of Slovak stamps, and just 128 overseas stamps. Radek did not collect any other stamps. Calculate how many stamps Radek had in the collection. - Production 29901
Calculate how many people are in production, if there are 1/5 workers on the morning shift, the afternoon shift has 3/10, and 50 people will join the night shift.
- Construction 7926
Honza had 19 wheels in the kit. He used all these wheels in the construction of tricycles and scooters. How much does he assemble complete scooters, and how many tricycles? Find all solutions. - Mathematical 7034
Jaroslav and his grandfather often played mathematical games. His grandfather gave him the following puzzle: The sum of four consecutive even numbers is 116. What are they? - A shopkeeper 5
A shopkeeper sold some sets of Pencils and Pens. Each set contained 6 pencils and 2 pens. If the shopkeeper sold 112 pencils and pens, how many pens did she sell altogether? - Two identical five-digits
We have two identical five-digit numbers, but we don’t know which ones. When we write one before the first, and after the second one, we get two six-digit numbers, one of which is three times the other. What are the numbers? - Real estate
The residential house has three entrances numbered by odd numbers arithmetic progression. The sum of the two numbers on the corner entrances is 50. Calculate the highest of these three numbers.
- One-quarter 82195
I have 100 marbles. One-quarter of them are white, and 3 fifths of the rest are blue. 1 third of those that are neither blue nor white are red, and the rest are green. How many marbles do I have? - Inspection 12171
During the inspection of the trees, we found that 1/3 was broken and 2/5 bitten. In the beginning, there were only 40 pieces. How much was planted in total? - Examination 2
A teacher awards two marks for every correct answer and subtracts a mark for every wrong answer in an examination. If there were 20 questions and a child scored 25 marks, how many correct answers did the child get? - Several 8130
The hotel has 27 beds in several rooms. There are single, double and triple rooms. How many single, double and triple rooms can there be in the hotel? Give at least three options. - Remainder 8124
The sum of the numbers is 878. If we divide the larger number by the smaller one, we get a ratio of 6 with the remainder of 17. What are the numbers?
- Calculated 7733
There are nurses and horses in the stable. Juraj calculated that they have 11 heads and 36 all legs. How many people are in the stable? - Difference 5847
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. - Tomorrow
Tomorrow is athletics day at school. Mom makes double the number of sandwiches that she usually makes. Then she adds four sandwiches so that Jabu and Thabo can each get six sandwiches. How many does she usually make? - Boys and girls 8
In a class of 35 boys and girls with a ratio of 2:5. 5 boys are absent, and five boys are present. How many students are present? - Pagans
Jano and Michael ate pagans. Jano ate three more than Michael. The product of their counts (numbers) is 180. How many pagans did each of them eat?
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