NCERT Practice Workbook Mathematics>Chapter 12 - Exponents and Powers>Worksheet 2>Q 1

EASY

8th CBSE

IMPORTANT

Earn 100

The number of red blood cells per cubic millimeter of blood is approximately $5.5 million$ . If the average body contains $5 L$ of blood, what is the total number of red cell in the body? Write in the standard form. $(1 L = 1000000 {mm}^{3})$

Important Questions on Exponents and Powers

MEDIUM

8th CBSE

IMPORTANT

NCERT Practice Workbook Mathematics>Chapter 12 - Exponents and Powers>Worksheet 2>Q 2

If the standard form of

14968000 = 1.4968 \times 10^{k}

, then

k =

_____.

MEDIUM

8th CBSE

IMPORTANT

NCERT Practice Workbook Mathematics>Chapter 12 - Exponents and Powers>Worksheet 2>Q 2

If the standard form of $243580000$ is $2.4358 \times 10^{b}$ , then $b =$ _____.

MEDIUM

8th CBSE

IMPORTANT

NCERT Practice Workbook Mathematics>Chapter 12 - Exponents and Powers>Worksheet 2>Q 2

If the standard form of $26800005 = 2.6800005 \times 10^{k}$ , then $k =$ _____.

MEDIUM

8th CBSE

IMPORTANT

NCERT Practice Workbook Mathematics>Chapter 12 - Exponents and Powers>Worksheet 2>Q 2

If the standard form of

0.0000289 = 2.89 \times 10^{k}

, then

k =

_____.

MEDIUM

8th CBSE

IMPORTANT

NCERT Practice Workbook Mathematics>Chapter 12 - Exponents and Powers>Worksheet 2>Q 2

If the standard form of

0.000000000345 = 3.45 \times 10^{k}

, then

k =

_____.

MEDIUM

8th CBSE

IMPORTANT

NCERT Practice Workbook Mathematics>Chapter 12 - Exponents and Powers>Worksheet 2>Q 2

If the standard form of

0.000069 = 6.9 \times 10^{k}

, then

k =

_____.

MEDIUM

8th CBSE

IMPORTANT

NCERT Practice Workbook Mathematics>Chapter 12 - Exponents and Powers>Worksheet 2>Q 2

If the standard form of

0.00034 = 3.4 \times 10^{k}

, then

k =

_____.

MEDIUM

8th CBSE

IMPORTANT

NCERT Practice Workbook Mathematics>Chapter 12 - Exponents and Powers>Worksheet 2>Q 3

Express the following in usual form.

$2.34 \times 10^{4} km =$ _____ $km$