Tag: square and square root

Questions Related to square and square root

Places in ones period are

maths square and square root scientific notation use of exponents power of 10

  1. ones and tens

  2. ones, tens and hundreds

  3. tens and hundreds

  4. ones, hundreds and thousands

Show answer
Correct Option: B
Explanation:

In Indian and international system in the both cases ones period has 3 places
= ones, tens, hundreds

$10$ crore= ....... million

maths square and square root scientific notation use of exponents power of 10

  1. 10

  2. 100

  3. 1

  4. 1000

Show answer
Correct Option: B
Explanation:

10 crores (or 1000 lakhs) is equal to 100 million (0.1 billion)

How many symbols are used in Roman numerals ?

maths square and square root scientific notation use of exponents power of 10

  1. 7

  2. 6

  3. 9

  4. 12

Show answer
Correct Option: A
Explanation:

There are seven basic symbols,

$I, V, X, L, C, D$ and $M$.

 

Hence, this is the answer. 

Which of the following are NOT correctly matched?

maths square and square root scientific notation use of exponents power of 10

  1. I = 7

  2. X = 10

  3. V = 2

  4. XII = 12

Show answer
Correct Option: A,C
Explanation:

We know that

$I=1, V=5, X=10,XII = 12$

So, $V$ can not equal to $2$ and $I$ can not equal to $7$

Hence, this is the answer.

A number which is a factor of every number is

maths square and square root scientific notation use of exponents power of 10

  1. 0

  2. 1

  3. 2

  4. none of these

Show answer
Correct Option: B
Explanation:

1 is the factor of every number .

Which option has same value as $10+10^3$

maths square and square root scientific notation use of exponents power of 10

  1. $2.0\times 10^3$

  2. $8.0\times 10^3$

  3. $4.0\times 10^1$

  4. $1.01\times 10^3$

Show answer
Correct Option: D
Explanation:

$10+{ 10 }^{ 3 }=10+1000=1010=1.01\times { 10 }^{ 3 }$

So correct answer will be option D

Write $1000000+200000+70000$ in scientific notation.

maths square and square root scientific notation use of exponents power of 10

  1. $1.27\times 10^5$

  2. $1.27\times 10^6$

  3. $3.7\times 10^6$

  4. $1.9\times 10^5$

Show answer
Correct Option: B
Explanation:

$1000000+200000+70000=1270000$

$\therefore 12700000=1.27\times 10^6$
Ans-Option $B$.

Write $4.5\times 10^5$ in decimal form

maths square and square root scientific notation use of exponents power of 10

  1. $450000$

  2. $45000$

  3. $4500$

  4. $4500000$

Show answer
Correct Option: A
Explanation:

$4.5\times 10^5=450000$

Ans-Option $A$.

Express $0.008712$ in scientific notation.

maths square and square root scientific notation use of exponents power of 10

  1. $8.712\times 10^3$

  2. $8.712\times 10^{-3}$

  3. $8.712\times 10^{-4}$

  4. $8.712\times 10^{-2}$

Show answer
Correct Option: B
Explanation:

$0.008712=8.712\times 10^{-3}$

Ans-Option $B$

Write $50000+4000+20+9$ in standard form.

maths square and square root scientific notation use of exponents power of 10

  1. $54290$

  2. $5429$

  3. $54209$

  4. $54029$

Show answer
Correct Option: D
Explanation:

We need to write it in a standard form:

$50000+4000+20+9$
$=54000+20+9$
$=54020+9$
$=54029$
Ans-Option $D$.