Exponent (Class-7, Experience- 1) - Active Math Class

NCTB Math Solution (English Version)

Exponent (Class-7, Experience- 1)

[Exercise- Page 28]

E.1.1 Determine the following exponents.

Solution:

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E.1.2 Determine the short forms of the following exponent.

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E.1.3 Fill in the blanks correctly.

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E.1.4 You must be aware of the covid-19 pandemic. This deadly and contagious epidemic got the entire world to a standstill for a long time. We will try to enumerate one by one about that pandemic. Suppose there are three people in a house. All of them have been infected with covid Now it is calculated that all three of them are able to infect at least three people separately in a day. 


Apply the concept of exponent to find out the minimum number of covid-19 infected people in the next seven days if no hygiene measures are followed? Try to fill up according to the table. You can see the above tree-diagram for your help. 



In this way, at least how many infected patients will there be at the end of 11th day and 14th day?

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E.1.5 Express the numbers 10 thousand, 1 lac, 10 lacs, 1 crore and 10 crores in mathematically short form. Notice how many zeros are there after the 1. Now check the exponential form. Is there any relation with the exponent and the number of zeros after 1?

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