Number Sense Test

Result

Number Sense Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

10 tens = __________

A
1 thousand ones

B
1 hundred

C
10 ones

D
10 thousands

Solution

10 tens = 10 x 10 = 100 = 1 hundred
Question 2
1 / -0

Using the digits 1, 5, 3, 8 and 9 only once, find out which smallest 5-digit number you can make.

A
13,589

B
15,389

C
18,359

D
39,851

Solution

When we are making the smallest 5-digit number, the digit at the ten thousands place should be the smallest out of the given digits.
So, 1 should be at the ten thousands place.
Similarly, the next smallest number should be at the thousands place, which is 3.
Hence, the smallest 5-digit number using the given digits is only 13,589.
Question 3
1 / -0

Using the digits 1, 5, 3, 8 and 9 only once, find out the biggest 5-digit number with 9 at the hundreds place.

A
98,351

B
98,531

C
85,931

D
83,951

Solution

Since 9 is at the hundreds place, the next biggest number which is 8 should be at the ten thousands place.
5 should be at the thousands place; 3 at the tens place; and 1 at the ones place.
So, option 3 is correct.
Question 4
1 / -0

Find out the difference between the place values of the digits '9' and '1' in the number 85,931.

A
99

B
998

C
898

D
899

Solution

Place value of '9' in the number = 900
Place value of '1' in the number = 1
= 900 - 1 = 899
Question 5
1 / -0

Find the odd one out:

A
10,000 ones

B
1000 tens

C
100 thousands

D
10 thousands

Solution

10,000 ones = 10,000 x 1 = 10,000
1000 tens = 1000 x 10 = 10,000
100 thousands = 100 x 1000 = 1,00,000
10 thousands = 10 x 1000 = 10,000
So, option 3 (100 thousands) gives a different value.
Question 6
1 / -0

If we partition the number 98,765, we will get:

A
9000 + 8000 + 900 + 60 + 5

B
90,000 + 8000 + 700 + 60 + 5

C
9,00,000 + 80,000 + 9000 + 60 + 5

D
900 + 800 + 70 + 6 + 5

Solution

Partitioning of 98,765
= (9 x 10,000) + (8 x 1000) + (7 x 100) + (6 x 10) + (5 x 1)
= 90,000 + 8000 + 700 + 60 + 5
Question 7
1 / -0

The descending order of the numbers 9152, 9215, 9521 and 9125 is:

A
9152, 9215, 9521, 9125

B
9152, 9125, 9215, 9521

C
9521, 9215, 9152, 9125

D
9521, 9152, 9215, 9125

Solution

Descending order means arranging the numbers from greatest to smallest.
For that we need to start from the left hand side of the place value chart or thousands in this question:
Each of these numbers has nine thousands.
Moving to the hundreds place, 5 is followed by 2 in decreasing order - 9521, 9215.
For the remaining two numbers;
5 at the tens place is greater than 2 at the tens place.
So, descending order of given numbers is 9521, 9215, 9152, 9125.
Question 8
1 / -0

The place value of '9' in 89,568 is

A
900

B
9000

C
90

D
9

Solution

The place value of '9' in 89,568 is 9000.
Question 9
1 / -0

1 crore = __________

A
10 lakh

B
100 lakh

C
100 million

D
1 million

Solution

1 crore = 1,00,00,000 = 100 lakh
Question 10
1 / -0

Twenty-nine thousand four hundred thirty is the same as

A
29,433

B
29,430

C
29,403

D
29,340

Solution

Twenty-nine thousand four hundred thirty is the same as:
29,000 + 400 + 30 = 29,430
Question 11
1 / -0

20,809 = 20 thousands + ____ hundreds + 9 ones

A
8000

B
800

C
80

D
8

Solution

20,809 = 20,000 + 800 + 9

So, the correct number is '8', i.e. option (4).
Question 12
1 / -0

The number on the box shows the best estimate of which of the following numbers of chocolate?

A
500

B
550

C
595

D
540

Solution

Since 600 is a multiple of hundred, the number is rounded to the nearest hundred.
So, we can see that the number representing the quantity of chocolates should have a digit equal to or greater than 5 at the tens place.
595 is the best estimate for the number of chocolates in the box.
Question 13
1 / -0

Which of the following statements is correct?

A
A is the largest of all the numbers.

B
D is the largest of all the numbers.

C
A is the smallest of all the numbers.

D
C is the largest of all the numbers.

Solution

The digits at the thousands and the hundreds place are same for each of the given numbers.
Also, the digit at the tens place is 0 for A, which is the smallest of all the numbers.
Hence, option 3 is correct.
Question 14
1 / -0

Which of the following is meaningful?

A
IIIX

B
IIVI

C
VIII

D
IIXV

Solution

In Roman numerals, we cannot put two symbols representing smaller numbers before a bigger number.
VIII is eight. Rest of them are not valid according to the Roman numeral system.
Question 15
1 / -0

Using the given table, answer the following question.

CD = _____

A
100 + 500

B
500 + 1000

C
500 - 100

D
100 - 500

Solution

In Roman numerals, if a symbol for a smaller number is written before the symbol for a bigger number, it means we have to subtract the smaller from the bigger number.
Hence, CD = 500 - 100 = 400
Question 16
1 / -0

Using the given table, answer the following question.

CII = ___________

A
201

B
112

C
102

D
98

Solution

In Roman numerals, when the symbol for a smaller number is written after the symbol for a bigger number, it means we need to add those symbols.
Hence,
CII = 100 + 1 + 1 =102
Question 17
1 / -0

What is 24,523 rounded to the nearest thousand?

A
20,000

B
25,510

C
25,000

D
25,500

Solution

When we round a number to the nearest thousand, we look at the hundreds place.
For the given number, the digit at the hundreds place is 5; so we will round the digit at the thousands place up.
Hence, 4 becomes 5.
So, the given number when rounded to the nearest thousand will become 25,000.
Question 18
1 / -0

Which should not be placed in the box to have the numbers in order from greatest to smallest?

A
4360

B
5520

C
5969

D
3920

Solution

5969 > 5968
So, 5969 can't be placed in the box to have the numbers in order from greatest to smallest.
Question 19
1 / -0

Which of the following is the same as 3506?

A
300 + 50 + 6

B
3 + 5 + 0 + 6

C
3000 + 500 + 6

D
3000 + 50 + 6

Solution

On partitioning the number, we see that 3 is at the thousands place, 5 is at the hundreds place and 6 at the ones place.
3000 + 500 + 6 = 3506
Question 20
1 / -0

88,534 becomes 88,530 when rounded to the nearest

A
ten

B
hundred

C
thousand

D
ten thousand

Solution

Since all the digits remain the same and the digit at the ones place becomes 0, it means that the number has been rounded to the nearest ten.
Question 21
1 / -0

A city has a population of 85,469. What will be the population of the city rounded to the nearest thousand?

A
86,400

B
85,000

C
86,000

D
85,400

Solution

The given number is 85,469.
To round it to the nearest thousand means that we have to look at the digit at the hundreds place.
For the given number it is 4.
Since it is smaller than 5, it means we have to round down.
So, we are going to round the digit at the thousands place down, i.e. thousands will remain same for the number.
Hence, rounding down 85,469 to the nearest thousand is 85,000.
Question 22
1 / -0

There are four villages - A with a population of 32,625; B with a population of 65,304; C with a population of 62,150; and D with a population of 44,562. Which village has the least population?

A
A

B
B

C
C

D
D

Solution

Population of village A = 32,625
Population of village B = 65,304
Population of village C = 62,150
Population of village D = 44,562

So, from the given information, village A has the least population with 32,625.
An estimate to the nearest thousands gives:
Village A = 33,000
Village B = 65,000
Village C = 62,000
Village D = 45,000
Question 23
1 / -0

A businessman estimated the cost of a building at about fifty-six thousand. How we can write this number in the numeral form?

A
50,600

B
60,500

C
56,000

D
65,000

Solution

Fifty-six thousand in the numeral form is 56,000.
Question 24
1 / -0

In a printing press, 4 types of books were printed in a year.

The number under each book type represents the number of copies of the book printed in the year.

Which of the book types has '6' at the hundreds place in the number of copies printed in the press?

A
1

B
2

C
3

D
4

Solution

Only book type 4 has '6' at the hundreds place in its number of copies printed in the press.
Question 25
1 / -0

Vikram calculated that there are ten thousand and eighty minutes in a week. Which of the following options represents this number?

A
10,008

B
10,800

C
10,080

D
18,000

Solution

Ten thousand and eighty minutes in the numerical form is 10,080.
Question 26
1 / -0

Which of the following statements is INCORRECT?

(A) X can be subtracted from L and C only.
(B) Symbols V, L and D are not repeated.
(C) Symbol I cannot be subtracted from X.
(D) None of the above

A
A

B
C

C
B

D
D

Solution

Symbol I can be subtracted from V and X both.

Question 27

1 / -0

Match the following:

Column-I	Column - II
(1) 6,92,345	(a) Place value of 3 = 300
(2) 99,999	(b) Successor of 6,29,542
(3) 6,29,543	(c) Smallest 5-digit number
(4) 10,000	(d) Biggest 5-digit number

(1) - (a), (2) - (d), (3) - (b), (4) - (c)

(1) - (d), (2) - (a), (3) - (b), (4) - (c)

(1) - (a), (2) - (b), (3) - (d), (4) - (c)

(1) - (b), (2) - (d), (3) - (c), (4) - (a)

Solution

As per the properties associated with the numbers,
(1) 6,92,345 - (a) Place value of 3 = 300
(2) 99,999 - (d) Biggest 5-digit number
(3) 6,29,543 - (b) Successor of 6,29,542
(4) 10,000 - (c) Smallest 5-digit number

Question 28
1 / -0

Rachna writes some clues for the number she is thinking of. Use the clues below to find out the number she is thinking of.

(1) 9 tens
(2) 6 hundreds
(3) 4 thousands
(4) 3 ones
(5) 4 ten thousands

A
44,643

B
46,493

C
44,693

D
49,443

Solution

According to the information:
(1) 9 tens = 9 x 10 = 90
(2) 6 hundreds = 6 x 100 = 600
(3) 4 thousands = 4 x 1000 = 4000
(4) 3 ones = 3 x 1 = 3
(5) 4 ten thousands = 4 x 10, 000 = 40,000
40,000 + 4000 + 600 + 90 + 3 = 44,693
Question 29
1 / -0

There are four numbers - P, Q, R and S. Each number has 8 only once and at the following place in the number.

Which of the following statements is correct?

(A) R is the smallest among all the numbers.
(B) S is the largest among all, if all other empty places will have '0' as values in all 4 numbers.
(C) P is greater than S.
(D) Q is greater than S.

A
D

B
A

C
C

D
B

Solution

S is the largest among all, as after putting 0 in all other places, it would become 80,000.
Question 30
1 / -0

Compare and fill the boxes with '<', '>' or '=':

(A) >, >, >
(B) < ,<, <
(C) >, =, <
(D) <, >, =

A
C

B
B

C
A

D
D

Solution

Option A is correct.
CIV >XCIX= 104 >99
CIX >LIX = 109 > 59
CX >CV = 110 > 105

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Re-Attempt Weekly Quiz Competition

Number Sense Test - 2

Result

Number Sense Test - 2

Score

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Rank

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SHARING IS CARING

Question 1

1 thousand ones

1 hundred

10 ones

10 thousands

Solution

Question 2

13,589

15,389

18,359

39,851

Solution

Question 3

98,351

98,531

85,931

83,951

Solution

Question 4

99

998

898

899

Solution

Question 5

10,000 ones

1000 tens

100 thousands

10 thousands

Solution

Question 6

9000 + 8000 + 900 + 60 + 5

90,000 + 8000 + 700 + 60 + 5

9,00,000 + 80,000 + 9000 + 60 + 5

900 + 800 + 70 + 6 + 5

Solution

Question 7

9152, 9215, 9521, 9125

9152, 9125, 9215, 9521

9521, 9215, 9152, 9125

9521, 9152, 9215, 9125

Solution

Question 8

900

9000

90

9

Solution

Question 9

10 lakh

100 lakh

100 million

1 million

Solution

Question 10

29,433

29,430

29,403

29,340

Solution

Question 11

8000

800

80

8

Solution

Question 12

500

550

595

540

Solution