A short-hand way of writing large numbers without writing all of the zeros.

The Distance From the Sun to the Earth 93,000,000 miles

 Move decimal to the left  Leave only one number in front of decimal

Step 2 WWrite number without zeros

Step 3  Count how many places you moved decimal  Make that your power of ten

The power of ten is 7 because the decimal moved 7 places.

993,000, Standard Form 99.3 x Scientific Notation

1) 98,500,000 = 9.85 x 10 ? 2) 64,100,000,000 = 6.41 x 10 ? 3) 279,000,000 = 2.79 x 10 ? 4) 4,200,000 = 4.2 x 10 ? Write in scientific notation. Decide the power of ten x x x x 10 6

1) 734,000,000 = ______ x ) 870,000,000,000 = ______x ) 90,000,000,000 = _____ x On these, decide where the decimal will be moved. 1)7.34 x ) 8.7 x ) 9 x 10 10

1) 50,000 2) 7,200,000 3) 802,000,000,000 Write in scientific notation. 1) 5 x ) 7.2 x ) 8.02 x 10 11

Move the decimal to the right 3.4 x 10 5 in scientific notation 340,000 in standard form move the decimal

 6.27 x 10 6  9.01 x 10 4  6,270,000  90,100