1. Scientific notation

2. What is IT?

5. = × 10-6
= 4 × 10-6

6. 4,540,000,000 = × 109
= 5 × 109
Remember when rounding if you have 5 or more in the column beside your rounding column, you increase the digit in the rounding column by 1. Therefore, 4 is increased to 5 since there is a 5 in the tenths column.

7. 𝟏𝟎𝟓 𝟏𝟎𝟒 =
𝟒 × 𝟏𝟎𝟓 𝟏 × 𝟏𝟎𝟒 = 𝟒 𝟏 × 𝟏𝟎𝟓 𝟏𝟎𝟒
4 × = 40
Remember, in Laws of Exponent you must subtract the powers/ exponents when you are dividing and the bases are the same.

8. 2 × = 0.02
3 × = 0.3
0.02
0.25
0.3
0.32
3.2 × = 0.32
2.5 × = 0.25

9. ( 𝟖 × 𝟕.𝟓 𝟓 ) ( 𝟏𝟎𝟐 × 𝟏𝟎𝟒 𝟏𝟎𝟐 )
( 𝟖 × 𝟕.𝟓 𝟓 ) ( 𝟏𝟎𝟔 𝟏𝟎𝟐 )
( 𝟔𝟎 𝟓 ) ( ) = × = × 105
Remember, according to the Laws of Exponents when multiplying numbers that have the same base, you must add the exponents.

10. ( × × )
( ) ( )
× = 4