Numbers and place value · Ages 8–9
Roman numeral rules: spotting a wrong one worksheet
Part of: Roman numerals
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Roman numeral rules: spotting a wrong one worksheet
Numbers and place value · Ages 8–9
Numsprite
numsprite.com
Name:Date:Score:／48
Write each answer in the space. For word problems, show your working and write a sentence answer.
Part A: Working out and filling in (2 marks each)
1.The numeral on this tablet is written wrongly. What number did the writer mean?
Answer:
2.How many of the tablets are written wrongly?
Answer:
Part B: Choose, or true or false (2 marks each)
3.The numeral on the tablet is written correctly.
True or false?
Answer:
4.Which tablet's numeral is written wrongly?
- A
- B
- C
- D
Choose the right picture
Answer:
5.Which tablet writes 3549 correctly?
- A
- B
- C
- D
Choose the right picture
Answer:
6.The numeral on this tablet is written wrongly. Which rule does it break?
- A. V, L or D is put before a bigger letter to take away
- B. A letter is written four times in a row
- C. V, L or D is used twice
- D. I, X or C is put before too big a letter to take away
Choose the right answer
Answer:
7.Which tablet writes 2199 correctly?
- A
- B
- C
- D
Choose the right picture
Answer:
8.Which tablet writes 2149 correctly?
- A
- B
- C
- D
Choose the right picture
Answer:
9.Which tablet writes 1599 correctly?
- A
- B
- C
- D
Choose the right picture
Answer:
10.Which tablet writes 3049 correctly?
- A
- B
- C
- D
Choose the right picture
Answer:
11.Which tablet writes 2499 correctly?
- A
- B
- C
- D
Choose the right picture
Answer:
12.Which tablet writes 3199 correctly?
- A
- B
- C
- D
Choose the right picture
Answer:
Part C: Word problems (4 marks each)
13.May wrote a Roman numeral (picture), but wrote it wrongly. Ka-yee says: “The number you meant, plus 11, is my house number.” What is Ka-yee's house number?
Working:
Answer:
14.A craftsman builds Roman numeral door signs from metal letters. The picture shows the signs he has built; the wrongly written ones must be taken apart. How many letters are in the signs taken apart?
Working:
Answer:
15.A robot writes each number from 1 to 87 in Roman numerals. It gets every tens right, but never subtracts in the ones: a 4 in the ones becomes IIII and a 9 becomes VIIII. How many numbers does it write wrongly?
Working:
Answer:
16.Ka-lok wrote a Roman numeral (picture), but wrote it wrongly. May says: “The number you meant, plus 8, is my house number.” What is May's house number?
Working:
Answer:
17.A robot writes each number from 1 to 93 in Roman numerals. It gets every tens right, but never subtracts in the ones: a 4 in the ones becomes IIII and a 9 becomes VIIII. How many numbers does it write wrongly?
Working:
Answer:
18.Ka-lok wrote a Roman numeral (picture), but wrote it wrongly. Tsz-hin says: “The number you meant, plus 13, is my house number.” What is Tsz-hin's house number?
Working:
Answer:
Show the answers and working
Roman numeral rules: spotting a wrong one worksheet: Answers and working
Part A: Working out and filling in
1. 20
Read it as it stands, left to right, subtracting a smaller letter before a bigger one. Don't worry yet that it's wrong.
Read it as it stands, left to right, subtracting a smaller letter before a bigger one: it means 20. But 20 must be written place by place, not like this.
2. 2
Read each tablet, then write that number properly and see whether the two match.
Read each one, then write that number properly and compare: 2 don't match, so they are wrong.
Part B: Choose, or true or false
3. False
Read the tablet's number left to right, write that number properly, then compare the two.
43 is written properly with IV, IX, XL or XC subtracting; no letter may appear four times in a row.
4. B
Read each tablet, write that number properly, and look for the one that doesn't match.
The wrong one means 490, but 490 written properly, place by place, looks different.
5. A
Split 3549 into thousands, hundreds, tens and ones, write each place, then compare with every tablet.
Place by place: the tens, 40, and the ones, 9, are written apart, each with a pair like IV, IX, XL or XC subtracting, and no letter more than three times in a row.
6. B. A letter is written four times in a row
Read the number it means, write that number properly, then see where the two differ.
It means 45. Check each rule and find where it differs from 45 written properly.
7. A
Split 2199 into thousands, hundreds, tens and ones, write each place, then compare with every tablet.
Place by place: the tens, 90, and the ones, 9, are written apart, each with a pair like IV, IX, XL or XC subtracting, and no letter more than three times in a row.
8. C
Split 2149 into thousands, hundreds, tens and ones, write each place, then compare with every tablet.
Place by place: the tens, 40, and the ones, 9, are written apart, each with a pair like IV, IX, XL or XC subtracting, and no letter more than three times in a row.
9. B
Split 1599 into thousands, hundreds, tens and ones, write each place, then compare with every tablet.
Place by place: the tens, 90, and the ones, 9, are written apart, each with a pair like IV, IX, XL or XC subtracting, and no letter more than three times in a row.
10. B
Split 3049 into thousands, hundreds, tens and ones, write each place, then compare with every tablet.
Place by place: the tens, 40, and the ones, 9, are written apart, each with a pair like IV, IX, XL or XC subtracting, and no letter more than three times in a row.
11. C
Split 2499 into thousands, hundreds, tens and ones, write each place, then compare with every tablet.
Place by place: the tens, 90, and the ones, 9, are written apart, each with a pair like IV, IX, XL or XC subtracting, and no letter more than three times in a row.
12. A
Split 3199 into thousands, hundreds, tens and ones, write each place, then compare with every tablet.
Place by place: the tens, 90, and the ones, 9, are written apart, each with a pair like IV, IX, XL or XC subtracting, and no letter more than three times in a row.
Part C: Word problems
Marking: 2 for the working, 1 for the answer, 1 for the sentence.
13. 31
Read the numeral in the picture as it stands, subtracting a smaller letter before a bigger one, to find what May meant.
Read as it stands, May meant 20: 20 + 11 = 31.
14. 2 letters
Read each sign, write that number properly and compare, to find which signs are wrong first.
Find the wrong signs and count their letters: 2 in all.
15. 17 numbers
Which numbers need a subtraction in the ones? List the wrong ones from 1 to 20 and spot the pattern.
The wrong ones end in 4 or 9: 4, 9, 14, 19, 24, … From 1 to 87 there are 17.
16. 98
Read the numeral in the picture as it stands, subtracting a smaller letter before a bigger one, to find what Ka-lok meant.
Read as it stands, Ka-lok meant 90: 90 + 8 = 98.
17. 18 numbers
Which numbers need a subtraction in the ones? List the wrong ones from 1 to 20 and spot the pattern.
The wrong ones end in 4 or 9: 4, 9, 14, 19, 24, … From 1 to 93 there are 18.
18. 112
Read the numeral in the picture as it stands, subtracting a smaller letter before a bigger one, to find what Ka-lok meant.
Read as it stands, Ka-lok meant 99: 99 + 13 = 112.
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