Answer:
Patterns used to determine the product of a number and a power of 10 :
When we multiply a number by a positive exponent of 10 then the resultant number is obtained by putting 0's, equal to the exponent, after the number.
For example :
2 × 10 = 20
2 × 10² = 200,
2 × 10³ = 2000,
.......so on......
In other words, we add zeros as much as the power of 10 after the number in the resultant number.