Roman numerals

Interactive exercises

Results

Converter

Rules

Worksheets

Reviews

DAILY BRAIN GAMES

Find the hidden battleships

Find the hidden battleships

Battleship Game

Interactive exercises

Results

Converter

Rules

Interactive exercises are generic, application compiles a new series of tasks each time you start.

INTERACTIVE EXERCISES

Interactive exercises: | {{restit}} |

Name: | |

Virtual keyboard: |

Number of tasks: | {{(plynum)}} |

Difficulty: | {{resdifi}} |

RESULT

Interactive exercises: | {{restit}} |

Name: | |

Date: | {{timest * 1000 | date:'dd.MM.yyyy HH:mm:ss'}} |

Num. of tasks: | {{(anscor+answro)}} |

Difficulty: | {{resdifi}} |

Correct answers: | {{anscor}} |

Wrong answers: | {{answro}} |

Efficiency: | {{anscor/(anscor+answro)*100|number:0}} % |

Time: | {{tmdur}} s |

Time per task: | {{tmdur / (anscor+answro)|number:1}} s |

Save the result and track your progress.

Login, if you don't have a profile yet,
create your profile.

CHOOSE TYPE OF TASKS

Convert decimal to Roman numeral

Convert decimal number to Roman numeral.

Convert decimal number to Roman numeral.

Convert Roman numeral to decimal

Convert Roman numeral to decimal number.

Convert Roman numeral to decimal number.

EXAMPLE OF A TASK

Roman numerals are a numeral system that was used by ancient Rome. Numbers in this system are represented by combinations of letters from the Latin alphabet.

Roman numerals were in use until the 14th century, when system was replaced by the more convenient Arabic numerals. However, Roman numerals are still used today in certain contexts.

Roman numerals were in use until the 14th century, when system was replaced by the more convenient Arabic numerals. However, Roman numerals are still used today in certain contexts.

These are not your results.

Log in to see your results.

If you don't have a profile yet, create your profile.

Log in to see your results.

If you don't have a profile yet, create your profile.

Proportion of correct answers (in %) for the last {{chrAnum}} exercises.

Show:

SHOW

Number of completed tasks by months. One exercise usually contains 6 to 15 tasks.

Show difficulty:

SHOW

Proportion of correctly solved tasks (in %) by months.

Show difficulty:

SHOW

Number of solved tasks by difficulty in each month.

Show month:

SHOW

Select a Roman numeral and check out its decimal value.

{{shwro}} = {{shwar}}

You can convert numbers between 1 and 3999.

Basic table for converting Roman numerals into Arabic decimal numerals.

Roman numerals have no symbol to represent 0.

Roman numerals | Arabic numerals |

I | 1 |

V | 5 |

X | 10 |

L | 50 |

C | 100 |

D | 500 |

M | 1000 |

Roman numerals have no symbol to represent 0.

If a numeral comes after a numeral that is larger or equal in value, then it must be added to the numeral before it.

VI = 5 + 1 = 6

XX = 10 + 10 = 20

A smaller numeral placed before a larger numeral indicates subtraction of that smaller numeral from the larger one.

You cannot subtract more than one value from a Roman numeral.

IV = 5 - 1 = 4

IX = 10 - 1 = 9

You cannot add more than three of the same Roman numeral together.

III = 3

Wrong: IIII, correct: IV = 4

Only powers of ten (I, X, C, M) can be subtracted.

Value 5

Wrong: VX (10 - 5)

Correct: V (5)

You can subtract only value that is 1/5th (one-fifth) or 1/10th (one-tenth) the larger one.

Wrong: IC = 100 - 1 = 99

Correct: XCIX = (100 - 10) + (10 - 1) = 99

INTERACTIVE EXERCISES, WORKSHEETS - YEAR 6

Place value whole numbers

2Dt 5S 4E =

Rounding whole numbers

2517 â‰ˆ

Multiples

3 6 12

Divisibility rules

783 ?

:2 :3 :4 :5 :8 :9 :10

:2 :3 :4 :5 :8 :9 :10

Roman numerals

XIV =

Addition with regrouping

5 | 3 | 4 | |

+ | 7 | 9 | 6 |

Subtraction with regrouping

8 | 2 | 5 | |

- | 6 | 0 | 7 |

Multiply multi-digit numbers

2 | 4 | 7 | â€¢ | 3 |

Divide multi-digit numbers

1 | 7 | 8 | 4 | : | 4 |

Exponents

5^{3} =

Distributive property

43 â€¢ 6 = ( + ) â€¢ 6 =

Asian countries by area

Distributive property

Multiply by 7, 8 and 9

Add and subtract integers

Multiply by 2 and 4

Create worksheets and PRINT or SAVE them. You can create unlimited number of different worksheets.

NUMBER OF TASKS

DIFFICULTY

EXAMPLE OF A TASK

Write your opinion, rating, critique or suggestion.

Please log in, if you don't have a profile yet, create your profile.

Numbers up to 20

Subtraction with regrouping

Rounding whole numbers

Earth's Rotation

European countries by area

We use cookies to give you the best experience on our website and to personalise content. Please let us know if you agree.

YES, I AGREE