Tag: number names, numerals and place values

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Questions Related to number names, numerals and place values

Multiple choice maths numbers and place value many forms of ten thousand standard form of numbers number names, numerals and place values

The distance of the sun from the earth is $1,49,60,00,00,000$ m. Express it in standard form.

  1. $\displaystyle 1\cdot 496\times 10^{-10}$
  2. $\displaystyle 1\cdot 496\times 10^{-11}$
  3. $\displaystyle 1\cdot 496\times 10^{10}$
  4. $\displaystyle 1\cdot 496\times 10^{11}$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

$1,49,60,00,00,000=$$\displaystyle 1\cdot 496\times 10^{11}$ m

Multiple choice maths numbers and place value many forms of ten thousand standard form of numbers number names, numerals and place values

The size of a plant cell is $0.00005473$ m. This number can also be written as

  1. $\displaystyle 5\cdot 473\times 10^{-3}$
  2. $\displaystyle 5\cdot 473\times 10^{-5}$
  3. $\displaystyle 5\cdot 473\times 10^{11}$
  4. $\displaystyle 5\cdot 473\times 10^{5}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

$\displaystyle 0\cdot 00005473=\frac{5473}{100000000}=\frac{5\cdot 473\times 10^{3}}{10^{8}}$
=$\displaystyle 5\cdot 473\times 10^{-5}$

Multiple choice maths numbers and place value many forms of ten thousand standard form of numbers number names, numerals and place values

The value of ${ \left( 256 \right)  }^{ 0.16 }.{ \left( 256 \right)  }^{ 0.09 }$ is:

  1. $4$
  2. $16$
  3. $64$
  4. $256.25$
  5. $-16$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

we know,


$a^{m} \times a^{n}=a^{m+n}$

and $256=4^{4}$

$\Rightarrow (256)^{0.16} \times (256)^{0.09}$ $=(256)^{0.25}$

we know,
$(a^{m})^{n}=a^{mn}$

$\Rightarrow (4^{4})^{0.25}$$=4^{4 \times 0.25}$$=4^1=4$