Warm Up #7 (Page 28) 10/9/2014Round the following numbers to 2 significant figures (Write the question)1)0.0009456 g2) 124,000 m3)1.25 cmPerform the following calculation and report your answer to the appropriate number of significant figures64.879 cm + 8956 cm + 79.10 cm

Significant Figures Review page

• Zeros do not count if they are behind a number and there is no decimal point.

• Remember when there is a decimal point, the zero could be significant.

• ***Find a decimal in a number, find the first significant figure in that number and that number and those that follow are all significant.

Examples

Scientific notation

• This is the standard form for scientific notation• M x 10 n

• M has to be a number between 1 and 10.• If n is a negative number, the number is smaller

than 1. Move decimal to the left for standard form.

• If n is a positive number, the number is bigger than 1. Move the decimal to the right for standard form.

Write these in decimal form

• 6.2 x 10 4

• 1.5 x 10 -2

• 2.4 x 10 -5

• 7.06 x 10 3

• 6 x 10 6

• 1.949 x 10 2

• 2.5007 x 10 -1

Are these correct?

• 9.2 x 10 2

• 0.4 x 10 -4

• 1.8 x 2 5

• 860 x 10 -3

• 9.8988989887 x 10 1

Write these in Scientific Notation

• 6,011,000• 0.058• 35• 0.009009• 6.732104

Calculate the following

• Volume of a cube• What is the volume of a cube if one of the

sides is 1 x 10 8 cm?