Writing numbers as Roman numerals

Difficulty Standard · Set q5slfo

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1
Write 222 in Roman numerals.
2
Write 224 in Roman numerals.
3
Write 9 in Roman numerals.
4
Write 60 in Roman numerals.
5
Write 239 in Roman numerals.
6
Write 306 in Roman numerals.
7
Write 70 in Roman numerals.
8
Write 211 in Roman numerals.
9
Write 186 in Roman numerals.
10
Write 238 in Roman numerals.
11
Write 77 in Roman numerals.
12
Write 205 in Roman numerals.
13
Write 92 in Roman numerals.
14
Write 299 in Roman numerals.
15
Write 263 in Roman numerals.
16
Write 42 in Roman numerals.
17
Write 272 in Roman numerals.
18
Write 29 in Roman numerals.
19
Write 131 in Roman numerals.
20
Write 175 in Roman numerals.

What is in this set

The numbers in this set run from 5 to 400.
63% of them add their letters straight through.
38% of them use a subtractive pair such as IV or XC.
A careful solution takes 2 written steps on average.
Answers are a short answer exactly as the problem asks for it.

Drawing 240 problems from this page produced 184 different ones, 77% — so a sheet of 20 is a new sheet almost every time.

The same skill, harder or easier

We would put this in front of a grade 4 class. That is our judgement, not a standard, and it is printed here so you can disagree with it. Everything else we put in that year.

Next to this

Reading Roman numerals

Numbers 0–0; 65% add their letters straight through.

Estimating a sum by rounding first

Numbers 100–999; 54% round up to an estimate above the exact answer.

Putting whole numbers in order

Numbers 1,005–9,997; every one will ask for a whole list in order rather than a single value.

All of number sense

28 skills in this topic, 75 sets between them.

Printing it

The printed sheet carries no menus and no advertising, and the answer key is on its own page.