Rounding is a process of minimizing numbers while keeping their value. It involves deciding which numbers to keep based on whether the number is less than 5, in which case it is left the same, or exactly 5 or above, when it is rounded up or 1 is added. Five is used as the threshold because it is in the middle and represents having enough members on a team to not lose a game. When reading decimals, the decimal point signifies "and" to state the place value of each digit.

1. ROUNDING OFF

2. ROUNDING OFF
Rounding is minimizing the numbers while keeping its’ value.
Ex. 18.5 - 19
73.1 - 73

3. HOW TO ROUND IT?
Decide which number/s to keep.
Leave it the same if the number is less than 5.
Round it off or add 1 is it is exactly 5 or above.
Ex.
23.45 - 23.50 (rounded up)
65.73 – 65.70 (rounded down)

4. WHY 5?
5 is at the middle
Imagine in a given sport 5 members per team.
Lower than 5 and you will loose the game.
5, 6, 7, 8, 9 “team up.”

5. HOW TO READ IT?
Decimal point signifies the word “and”
Ex. 23.567
twenty three and five hundred sixty – seventh thousandths
twenty three point five six seven

6. REFERENCES:
http://www.math.com/school/subject1/lessons/S1U1L2DP.html
http://www.mathsisfun.com/rounding-numbers.html