1. 4.3 Comparing and Ordering Decimals

2. Homework

3. Mental Math
Turn to your partner and take turns reading aloud the following decimals:

4. Solve Problem 1 on MJ page 82.
Math Message
Solve Problem 1 on MJ page 82.

5. How can we show that 0.3 > 0.15?
Use base-10 blocks.
If a is ONE, then 0.3 is 3/10 of the flat, or
…and 0.15 is 15/100 of the flat, or 15 cubes. Because 3 longs are more than 15 cubes, 0.3 > 0.15. OR

6. How can we show that 0.3 > 0.15?
Add the PHANTOM ZERO.
Rename one of the decimals have the same number of digits to the right of the decimal point.
We know that 0.3 = 0.30.
Now 0.15 and 0.30 both have two places after the decimal point. Stack them on top of each other and compare.
0.30
0.15
Thirty is larger than fifteen, so 0.3 > 0.15

7. Complete MJ p 82.
You can use base-10 blocks to help you, or you can use the phantom zero!

8. Partnership Work – MJ p. 83

9. Write one new fact you learned about comparing and ordering decimals.
Wrapping it UP!
In your math notebook, solve the following problems.
0.67 ___ 0.7
___ 1.1
Write one new fact you learned about comparing and ordering decimals.

10. Product Pile-Up SRB 259

11. Homework – Study Link 4.3

12. Math Box 4.3