DAILY DOSE:UNDERLINE THE DIGIT IN:

1) TENTHS PLACE: 37.1892

2) HUNDREDS PLACE: 4,012.782

3) HUNDREDTHS PLACE: 827.256

4) MULTIPLY: 3.25 X 1.8

NOTES: ROUNDING

Rounding means reducing the digits in a number, while trying to keep its value similar.

Ex: 73 rounded to the nearest ten is 70, because 73 is closer to 70 than to 80.

- What is "Rounding" ?

* My goal is… to round whole numbers and decimals to any given place.

HOW TO ROUND NUMBERS• DECIDE WHICH IS THE LAST DIGIT TO KEEP

• LEAVE IT THE SAME IF THE NEXT DIGIT IS LESS THAN 5 (THIS IS CALLED ROUNDING DOWN)

• BUT INCREASE IT BY 1 IF THE NEXT DIGIT IS 5 OR MORE (THIS IS CALLED ROUNDING UP)

Remember- “5 or above, give it a shove. 4 or below, let it go.”

Examples:

1) 3.14159 rounded hundredths is: __________________

2) 2.456 rounded tenths is: __________________

3) 109.61 rounded whole (ones place) is: __________________

4) 154.999 rounded tens is: __________________

Poduch’s Recommendation:

1) Underline the place that you are rounding to.2) Use a line to “cut” the number after the place you are rounding to.3) If the first “cut” digit is a 5 or higher, round up by one.4) Rewrite the rounded number, stopping at the correct place.

STORY PROBLEMS:

5) For Cathy’s wedding, she thinks that 172 guests will come. Her party planner asks for her to estimate how many people will be at the wedding, so Cathy rounds to the nearest tens. What number does Cathy give the party planner?

STORY PROBLEMS:

6) Mangos are $1.19 per pound. Destin’s bag of mangos weighs 3.2 pounds. How much will the bag of mangos cost?

STORY PROBLEMS:

7) Cory is ordering rope to make a tree-swing. He measures the length as 18.96 feet. The company asks him to round the measurement to the nearest tenth of a foot. How much rope will he order?