Question

Q1. Fill in the blanks:
a. The symbol M in roman numeral stands for__________.
b. Sum of X and L in numerals is ____________.
c. The smallest number which when rounded off to nearest hundred as 500, is ___________.
d. If a symbol is repeated, its value is __________ the number of times it occurs.
e. In Roman Numeration, a symbol is not repeated more than _________ times.
f. Symbol ______, _______ and _______ are never repeated.
g. XIX + XXI = _______
h. The greatest number which when rounded off to the nearest hundred as 7000, is ___________.
i. Round off 56,00,657 to nearest lakhs ________.


Q3. Estimate using the general rule: 8325 – 491

Q4. Give a rough estimate (by rounding off to the nearest hundreds) and a closer estimate (by rounding off to nearest tens)
a) 538 + 234 + 4,318
b) 1,89,768 - 1,45,890
c) 335 x 904
d) 8235 + 36
e) 357 - 48

Q5. Write the following in Roman Numerals:
a) 89 b) 175 c) 197
d) 236 e) 478 f) 759
g) 996 h) 107 i) 235

Q6. Write the following in Hindu-Arabic numerals:
a) CCXLII b) CDLXXVIII c) DCXIV
d) DXCVIII e) CDXLVI f) CCXXIX g) XCIX h) LXXXIX

Q7. Insert > or < in the given boxes:-
a) DCCCXC ___CDXLIX
b) CLXVIII ____ LXXXIV
c) LXXXIX ___ XC
d) LX ____ XC

Q8. Estimating the sum 2,904 + 13,868 by estimating the numbers to their nearest:
tens
hundreds
thousands

Q9. Estimate: 65,673 – 3,436 by estimating the numbers to their nearest-
thousands
hundreds
greatest places

Q10. Estimate the following using general rule:
a) 286 × 121
b) 409 × 178

Q11. There are 1174 red toffees and 248 blue toffees in a jar. Estimate the total number of toffees using the general rule.

Q12. Which of the following numbers in Roman Numerals is incorrect and Why?
a) LXII
b) XCI
c) LC
d) XLIV

Q13. Which of the following is meaningless and Why?
XIII
XIX
XVV
XL

Q14. There are 54 balls in the first box and 179 balls in the second box. Estimate the total number of balls in both the boxes using the general rule.

Q15. In Roman Numeration, the symbol X can be subtracted from_____ and C only.

Answer 1

Answer:

Q1.Fill in the blanks

a.I=1;V=5;X=10;L=50;C=100;D=500;M=1000

Step-by-step explanation:

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Answer 2

Answer:

Q1.

a). 1000

b). 10+50=60

e). three times

f). V, L, D

g). 19+21=40

Q5.

a). LXXXIX

b).CLXXV

c).CXCVII

d). CCXXXVI

e).CDLXXVIII

f). DCCLIX

g). CMXCVI

h). CVII

i). CCXXXV

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