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Number of problems found: 17

Addition of Roman numbers
Add the following and write the result as a decimal number: LXXV + MCCCXV
Roman numerals
Write numbers written in Roman numerals as a decimal.
Roman numerals 2+
Add up the number written in Roman numerals. Write the results as roman numbers.
Roman numerals +
Add up the number written in Roman numerals. Write the results as a decimal number.
Roman numerals 2-
Subtract the number written in Roman numerals. Write the results as Roman numbers.
Points scored
Peter scored 18 points, George half, Roman scored 3 points less than Peter, and Dennis one point less than George. How many points did Dennis score?
April (month)
April has 30 days. Roman saves his money in the box for the whole month. Every third day, you save 10 cents. How many cents did Roman save during the entire month he started saving on April 1?
Classmates
Roman is ranked 12th highest and eleventh lowest pupil. How many classmates does Roman have?
Magic number conjuring
Roman likes magic and math. Last time he conjured three- or four-digit numbers like this: • created two new numbers from the given number by dividing it between digits in the place of hundreds and tens (e.g., from the number 581, he would get 5 and 81), •
Sparklers
Roman lit his 10 equally-sized sparklers one by one on New Year's Eve. He lit the first one. When only one tenth of it remained, he lit the second one; when only one tenth of that remained, he lit the third, and so on. The sparklers burn at a constant rat
Average grade puzzle
The top five mathematicians in the class took on the teacher's help in calculating the paper's average grade. They dictated the following results: Mischa: "I came up with 3.30. " Dasha: "That's weird because it worked out precisely at 3.45. " Jana: "You p
Homework word rewriting
The teacher gave the students homework to rewrite 32 words. Roman rewrote more words than he was given the task. How many words could he rewrite?
Roman 2
Roman thermae around the year 200 AD were baths equipped with underground central heating. The largest of them had a rectangular pool of cold water with base dimensions of 17 m and 51 m, with the water reaching a height of 150 cm. Calculate according to P
The Roman
Roman numerals use an additive system (e.g. VII = 7) and a subtractive system (e.g. IX = 9). How would you explain to your students how to read the Roman numeral MMXIX? Also, state the answer.
A marathon
Trevion is training for a marathon. In February, he ran XLVII miles for his training. In January, he was only able to run XXIV miles. How many more miles did he run in February than in January?
Pavol 3
Pavol and Roman trained on a running track of length 400 m. At a certain moment they ran from the start in the same direction and ran at a uniform motion. When Pavol, after completing five laps in time 6 min 40 s, passed the starting point again, he overt
Swing balance distance
Roman and Mathias made a swing in the park by taking a 5 m-long pole and supporting it in the middle. Roman, weighing 52 kg, sat down at the left end. Where should Mathias sit to achieve balance if he weighs 60 kg? Enter the distance measured in meters fr

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