(Page 44) Insert a leading number 0
When multiplying numbers with significant digits, count the total number of significant digits in each number being multiplied. The result should have the same number of significant digits as the number with the fewest significant digits. Round the final answer to that number of significant digits.
Alien registration number should be 9 digits long with no alphabetical characters.
The number of digits in the coefficient should be exactly the same as the number of significant figures.
A Social Security Number should only be composed of nine digits. Three digits then a dash, three more digits then another dash, and three final digits should be the only numbers.
The digits should stay where they are. The decimal point should move 2 places to the left.
It should be 1234 or your number or it should be 0000 or 000000 or the last 4 digits of your number
descending order
You do by subtracting one from the previous number and adding 10 to the top number of the digits you are regrouping. Subtract those two digits and you should get your answer.
You change all the digits to the right of the digit you are rounding to to zeros.
You change all the digits to the right of the digit you are rounding to to zeros.
The 5 should be deleted.
7642