3 Mark Question

Question 13 Marks

Arrange the following numbers in descending order:
54796203, 4675238, 63240613, 5125648, 589623

Answer

63240613 and 54796203 are both eight-digit numbers.
At the crores place, one number has 6, while the second number has 5.
Clearly, 5 < 6
$\therefore$ 63240613 > 54796203
5125648 and 4675238 are both seven-digit numbers.
However, at the ten lakhs place, one number has 5, while the second number has 4.
Clearly, 4 < 5
$\therefore$ 5125648 > 4675238
589623 is a six-digit number.
The given numbers in descending order are:
63240613 > 54796203 > 5125648 > 4675238 > 589623

View full question & answer→

Question 23 Marks

Write the Hindu-Arabic numeral for each of the following:

S.No.	Roman numeral
i	CCXLII
ii	CDLXV
iii	LXXVI
iv	DCCXLI
v	XCIV
vi	CXCIX

Answer

S.No.	Roman numeral	Hindu-Arabic
i	CCXLII	CCXLII = 100 + 100 + (50 - 10) + 2 = 242
ii	CDLXV	CDLXV = (500 - 100) + 50 + 10 + 5 = 465
iii	LXXVI	LXXVI = 50 + 10 + 10 + 6 = 76
iv	DCCXLI	DCCXLI = 500 + 100 + 100 + (50 - 10) + 1 = 741
v	XCIV	XCIV = (100 - 10) + 4 = 94
vi	CXCIX	CXCIX = 100 + (100 - 10) + 9 = 199

View full question & answer→

Question 33 Marks

Write the largest and smallest numbes using each of the digits 1, 4, 6, 8, 0 only once and find their difference.

Answer

The largest number using each of the digits: 1, 4, 6, 8 and 0, is 86410.
The smallest number using each of the digits: 1, 4, 6, 8 and 0, is 10468.
$\therefore$ Required difference = 86410 - 10468
= 75942

View full question & answer→

Question 43 Marks

Arrange the following numbers in ascending order:
700087, 8014257, 8015032, 10012458, 8014306

Answer

700087 is 6-digit number.
8014257, 8014306 and 8015032 are all 7-digit numbers.
They have the same digits, namely 8, 0 and 1, at the ten lakhs, lakhs and ten thousands places, respectively.
But, at the thousands place, one number has 5 while the other two numbers have 4.
Here, 801503 is the largest.
The other two numbers have 2 and 3 at their hundreds places.
Clearly, 2 < 3
$\therefore$ 8014306 < 8015032
10012458 is an 8-digit number.
The given numbers in ascending order are:
700087 < 8014257 < 8014306 < 8015032 < 10012458

View full question & answer→

Question 53 Marks

Arrange the following numbers in ascending order:
3903216, 19430124, 864572, 6940513, 16531079

Answer

We have,
864572 is a 6-digit number.
3903216 and 6940513 are seven-digit numbers.
At the ten lakhs place, one number has 3, while the second number has 6.
Clearly, 3 < 6
$\therefore$ 3903216 < 6940513
16531079 and 19430124 are eight-digit numbers.
At the crores place, both the numbers have the same digit, namely 1.
At the ten lakhs place, one number has 6, while the second number has 9.
Clearly, 6 < 9
$\therefore$ 16531079 < 19430124
The given numbers in ascending order are:
864572 < 3903216 < 6940513 < 16531079 < 19430124

View full question & answer→

Question 63 Marks

How many 7-digit numbers are there in all?

Answer

The largest seven-digit number = 9999999
The smallest seven-digit number = 1000000
Number of all seven-digits numbers = (9999999 - 1000000) + 1
= 899999 + 1
= 9000000
Hence, there is a total of ninety lakh 7-digit numbers.

View full question & answer→

Question 73 Marks

Write the Roman numeral for each of the following:

S.No.	Numerical
i	84
ii	99
iii	145
iv	406
v	519

Answer

S.No.	Numerical	Roman numeral
i	84	84 = 50 + 30 + 4 = LXXXIV
ii	99	99 = 90 + 9 = XCIX
iii	145	145 = 100 + (50 - 10) + 5 = CXLV
iv	406	406 = 400 + 6 = CDVI
v	519	519 = 500 +10 + 9 = DXIX

View full question & answer→

Question 83 Marks

Write each of the following in figures in the international place-value chart:

Thirty million one hundred five thousand sixty-three.
Fifty-two million two hundred five thousand six.
Five million five thousand five.

Answer

Periods	Millions			Thousands			Ones
Place	Hundred millions	Ten millions	Millions	Hundred thousands	Ten thousands	Thousands	Hundreds	Tens	Ones
Place	HM	TM	M	H Th	T Th	Th	H	T	O
(i)		3	0	1	0	5	0	6	3
(ii)		5	2	2	0	5	0	0	6
(iii)			5	0	0	5	0	0	5

View full question & answer→

Maths 3 Mark Question

Take a timed test