Comparing and ordering_decimals
- 1. Comparing and Ordering Decimals When Will I Ever Do That???!!!
- 2. McDonald’s Menu…. I’m Lovin It!! Double Cheeseburger: $ .99 Big Mac Value Meal: $ 4.79 Chicken McNuggetts Meal: $ 3.80 Small Drink: $ .99 McFlurry: $ 1.97 Salad: $ 4.80 2 Cheeseburger Meal: $ 3.70 Ice Cream Cone: $ .87
- 3. Order Up! Least Expensive to Most Expensive Ice Cream Cone .87 Double Cheeseburger: .99 Small Soft Drink: .99 McFlurry: 1.97 2 Cheeseburger Meal: 3.70 Chicken McNuggetts Meal: 3.80 Big Mac Value Meal: 4.79 Chicken Salad: 4.80
- 4. What Do I Mean Compare Decimals? When we compare we use terms such as: Less than < Greater than > Equal to = Comparing decimals is similar to comparing whole numbers. 45<47 150>105 When we compare decimals we use place value or a number line.
- 5. Place Value 1,000 100 10 1 0.1 0.01 0.001 0.0001
- 6. Comparing and Ordering Steps 1. Organize 2. Equalize 3. Order
- 7. ORGANIZE Line up the numbers vertically by their decimal points: 8.4, 7.32, 0.25, 0.6 8.4 7.32 0.25 0.6
- 8. EQUALIZE Make equivalent decimals Decimals that name the same number are called equivalent decimals. 0.60 and 0.6 Are these the same???
- 9. 0.60 = 0.6
- 10. EQUALIZE Make decimals have the same number of digits. This means adding a zero to the right of the last digit in a decimal. 0.6 0.60 Although we added a zero, the value of the decimal did not change!!
- 11. ORGANIZE AND EQUALIZE 1. 0.2 and 0.56 2. 0.45 and 0.5 3. 1.89 and 0.9 4. 5.6 and 5.62 5. 4.09 and 4.9 6. 0.04 and 0.9 7. 2.34 and 2.43 8. 43.1 and 4.32
- 12. Ordering Decimals We can order decimals from least to greatest or we can order from greatest to least. Let’s try an example: Order 15, 14.95, 15.8, and 15.01 from least to greatest
- 13. 15, 14.95, 15.8, 15.01 First, ORGANIZE: line up the decimal points vertically 15. 14.95 15.8 15.01
- 14. 15, 14.95, 15.8, 15.01 Next, EQUALIZE: Add zeros so that each number has the same number of decimal places 15.00 14.95 15.80 15.01
- 15. 15, 14.95, 15.8, 15.01 Finally, ORGANIZE Use place value to compare the decimals. Always start from the left!! 15.00 14.95 15.80 15.01 14.95, 15, 15.01, 15.8
- 16. Example Order these numbers from greatest to least 35.06, 35.7, 35.5, 3.84
- 17. Half pipe Results ORGANIZE Sara 42.15 EQUALIZE ORDER Danny 41.2 Ross 4.02 Order the following Half pipe scores from Bethany 42.1 least to greatest. Jacob 42.12