ELA and Math with Mrs. D

"For never was a story of more woe/ Than this of Juliet and her Romeo."

Decimals Operations

Rule for addition and subtaction of decimals.
#1 Line up the decimal points
#2 Add or subtract the digits in the same place-value positions.  Rename as necessary.
#3 Bring the decimal point straight down in the sum or difference.

Find 5.34  + 4.78

    5.34
 + 4.78       Line up the decimals
  10.12       Bring the decimal point straight down

 

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A 17 Million Digit Prime Number WOW

A new prime number, thought to be the largest ever identified, has been discovered by a professor at the university of Central Missouri. Curtis Cooper used a giant computer network to do the work to find the 17-million digit number - which is a number divisible only by itself and by one.

A 17 Million Digit Prime Number WOW