Unit 1 Chapter 1 Section 4 Fractions and Decimals.notebook
Bell Ringer:
September 15, 2015
In your Guided Notes
Copy down tonight's Homework. 1) Find the difference in the scores of the card game, Rummey. The winner had 40 points and the opponent had ‐5 points.
2) In three hours, a hiker in goes from 98 ft to 80 ft inside the canyon. Find the hiker’s vertical speed.
3) A hawk soars at an altitude of 100 ft and then descends to the ground in 5 min. What is its vertical speed?
Unit 1
Chapter 1 Section 4
Fractions and Decimals
Objective: To convert between fractions and decimals
A Terminating Decimal is a decimal that stops.
0.25, 0.3, ­1.6789
A Repeating Decimal is a decimal that has a block of digits that repeats without end. 1/3 = 1.3333 ­2.45 3.54698
Unit 1 Chapter 1 Section 4 Fractions and Decimals.notebook
September 15, 2015
Writing a Terminating Decimal
Example:
4 25 = = 25 Quick Check­ Write the fractions as decimals. Check with calculator.
1) 2) 3)
4) The fraction of nitrogen in a chemical sample is . Write the fraction as a decimal. Writing a Repeating Decimal
Example:
3 11 = = 11 Quick Check­ Write the fraction as a decimal. Check with calculator.
1) 2) 3) Unit 1 Chapter 1 Section 4 Fractions and Decimals.notebook
September 15, 2015
Problem Solving
On an adventure trail you biked 12 miles, walked 4 miles, ran 6 miles, and swam 2 miles. What fraction of the total distance did you bike? Write this number as a decimal.
Writing a Decimal as a Fraction
Example:
Write 1.325 as a mixed number with a fraction in simplest form.
1, 0.325 = 1
=
Quick Check­ Write each decimal as a mixed number
1) 1.364 2) 2.48 3) 3.6
Unit 1 Chapter 1 Section 4 Fractions and Decimals.notebook
Ordering Fractions and Decimals
Example:
Order from greatest to least: 2, 2.55, 2
Quick Check­ Order from greatest to least: 1) 1 , 1 , 1.862
2) 0.25, 0.125, , 3) 3 , 2.897, 3 Homework:
1.4 Practice Worksheet
September 15, 2015