1. Standard Form Objective: To be able to understand and use standard form

2. Standard Form x 10 A number between 1 and 10 (but not including 10) A power of 10

3. Example 20000000000000000000000000 This number is HUGE!! It is much easier to write the number in standard form x 10 A number between 1 and 10 (but not including 10) A power of 10 2 25

4. Example 0.000000000000006 This number is Tiny!! It is much easier to write the number in standard form x 10 A number between 1 and 10 (but not including 10) A power of 10 6 -15

5. Let’s try some together... a)900000 b)78000000 c)0.0000005 d)0.00000123

6. YOUR TURN! a)7000 b)86000 c)340000000 d)0.00000012 e)0.056 f)0.0000478

7. Multiply two numbers 4 x 10 18 x 3 x 10 4 4 x 3x 10 18 x 10 4 Numbers Powers of 10 = 12 x 10 22 ADD powers = 1.2 x 10 1 x 10 22 = 1.2 x 10 23 NOT Std Form!

8. Let’s try some together... (2x 10 2 ) x (4 x 10 5 ) (8 x 10 8 ) x (2 x 10 -5 ) (25 x 10 8 ) ÷ (5 x 10 2 )

9. Try these.... 1.(3 x 10 4 ) x (2 x 10 5 ) 2.(4 x 10 3 ) x (3 x 10 5 ) 3.(7 x 10 4 ) x (2 x 10 -3 ) 4.(8 x 10 6 ) ÷ (2 x 10 2 ) 5.(20 x 10 4 ) ÷ (4 x 10 8 )

10. BINGO