Question

30. Write in standard form

1.15 x 10 to the power of negative 5



31. Write in standard form

2.2 x 10 to the power of negative 10



32. Write in standard form

4.3 x 10 to the power of 10

Answer 1

30) 0.0,000,115

31) 0.00,000,000,022

32) 43,000,000,000

Explanation:

30

1.15 x
`10^(-5)` The negative exponent is telling us that the number in standards form is smaller than 1.15. To write in standard form we move the decimal 5 places to the left.

0.0,000,115

31

2.2 x
`10^(-10)` This is like question 30, but we will move the decimal 10 places to the left this time.

0.00,000,000,022

32

4.3 x
`10^(10)` the exponent is positive this time. That means in standard from the number is much larger than 4.3. Move the decimal point 10 places to the right. If you do not see a decimal point, it means that it is at the end of the number.

43,000,000,000