EASY
8th CBSE
IMPORTANT
Earn 100

One Fermi is equal to 10-15 metre . The radius of a proton is 1.3 Fermi. Write the radius of a proton in metres in standard form.

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Important Questions on Exponents and Powers

EASY
8th CBSE
IMPORTANT

The paper clip below has the indicated length. What is the length in standard form.

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EASY
8th CBSE
IMPORTANT

Use the properties of exponents to verify that the following statement is true.

142n=2n-2

EASY
8th CBSE
IMPORTANT

Use the properties of exponents to verify that the following statement is true.

4n-1=14(4)n

EASY
8th CBSE
IMPORTANT

Use the properties of exponents to verify that the following statement is true.

255n-2=5n

EASY
8th CBSE
IMPORTANT

Fill the circles with numbers:

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MEDIUM
8th CBSE
IMPORTANT

There are 864,00 seconds in a day. How many days long is a second? Express your answer in scientific notation.

EASY
8th CBSE
IMPORTANT

The given table shows the crop production of a State in the year 2008 and 2009. Observe the table given below and answer the given questions.

Crop

2008 Harvest 

(Hectare)

Increase/Decrease 

(Hectare) in 2009

Bajra 1.4×103 100
Jowar 1.7×106 440,000
Rice 3.7×103 100
Wheat 5.1×105 +190,000

For which crop(s) did the production decrease?

HARD
8th CBSE
IMPORTANT

The given table shows the crop production of a State in the year 2008 and 2009. Observe the table given below and answer the given questions.

Crop

2008 Harvest 

(Hectare)

Increase/Decrease 

(Hectare) in 2009

Bajra 1.4×103 100
Jowar 1.7×106 440,000
Rice 3.7×103 100
Wheat 5.1×105 +190,000

Write the production of all the crops in 2009 in their standard form.