Grade 4 - Progress in Mathematics

Roman Numerals

The ancient Romans used letters to write numbers.

Use these rules to read and write Roman numerals:

• When letters that stand for lesser numerals come
  afterletters that stand for greater numerals, add.
  III 1
  1
  1  3
  VIII 5
  3  8
  LVIII 50
  8  58


• When a letter that stands
  for a lesser numeral comes
  beforea letter that stands for
  a greater numeral, subtract.
  IV 5  1  4
  IX 10  1  9
  XL 50  10  40

CXLVII  C XL VII

100 
 40 
 7  147

Write the Roman numeral in standard form.

2 1. LXIV 2 2. XXXIX 2 3. LXIX 2 4. CXXVI 2 5. CCVII

Write each as a Roman numeral.

2 6. 17 2 7. 48 3 8. 300 3 9. 89 10. 56 11. 234

1 I 4 IV 7 VII 10 X 40 XL 70 LXX

2 II 5 V 8 VIII 20 XX 50 L 80 LXXX

3 III 6 VI 9 IX 30 XXX 60 LX 90 XC

100 C

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