Comparing Numbers Using Scientific Notation

Q. The mass of an electron is $9.1\times {10}^{-31}$ kg while the mass of a proton is $1.67\times {10}^{-27}$ kg. Which among the proton and electron has the larger mass?

1. Proton
2. Electron
3. Both have the same mass
4. Cannot be determined

Q. Arrange the following numbers in descending order:

1. $3.21\times {10}^9$
2. $6.23$ Billion
3. $9.25$ Million
4. $9.25\times {10}^7$
5. ${10}^{-7}$

Q.

NUMBER SENSE
Describe how the value of a number written in scientific notation changes when you increase the exponent by 1.

Q. Which is the correct relation for the numbers $3.28\times {10}^7$ and $4.59\times {10}^5,$ written in scientific notation?

1. $4.59\times {10}^5>3.28\times {10}^7$
2. $4.59\times {10}^5<3.28\times {10}^7$
3. $4.59\times {10}^5=3.28\times {10}^7$
4. Cannot be determined

Q.

Write the number in scientific notation.
$50,000$

Q. Arrange the following numbers in an ascending order:
$3.65\times {10}^{-7},$
$5.78\times {10}^{-6},$
$2.39\times {10}^{-9},$ and
$8.16\times {10}^{-6}$

1. $3.65\times {10}^{-7}$
   $5.78\times {10}^{-6}$
   $2.39\times {10}^{-9}$
   $8.16\times {10}^{-6}$
2. $2.39\times {10}^{-9}$
   $3.65\times {10}^{-7}$
   $8.16\times {10}^{-6}$
   $5.78\times {10}^{-6}$
3. $2.39\times {10}^{-9}$
   $3.65\times {10}^{-7}$
   $5.78\times {10}^{-6}$
   $8.16\times {10}^{-6}$
4. $3.65\times {10}^{-7}$
   $2.39\times {10}^{-9}$
   $5.78\times {10}^{-6}$
   $8.16\times {10}^{-6}$

Q. Choose the correct relation between the numbers $2.5\times {10}^6$ and $25,000,000$.

1. $2.5\times {10}^6>25,000,000$
2. $2.5\times {10}^6<25,000,000$
3. $2.5\times {10}^6=25,000,000$
4. Cannot be determined

Q. Compare the numbers $2.5\times {10}^6$ and $25,000,000$.

1. $2.5\times {10}^6<25,000,000$
2. $2.5\times {10}^6>25,000,000$
3. $2.5\times {10}^6=25,000,000$
4. Cannot be determined