Week

 Student will: scientific notation  Write in scientific notation

Take only the digits and zeroes between numbers (ignore the beginning and ending zeroes) Move the decimal so only one number is on the left of the decimal point Determine the number of times the decimal point moves to reach its original spot +4 times Add in x x 10 4 Step 1 Step 2 Step 3 Step 4

x ,800, x x Practice

 Student will:  Re-arrange equations

For each equation, solve for a Practice

 Student will: Significant Digits  Count the Significant Digits

Rules for Counting Significant Figures  Always  Always count as significant figures sig fig Never  Leading zeros - Never count sig fig Always  Captive zeros - Always count sig fig only if  Trailing zeros - count only if the number is written with a decimal point sig fig sig fig sig fig Nonzero Integers Zeros

 Unlimited significant figures  Not obtained by measurement  Determined by counting 15 apples  Determined by definition 1 in. = 2.54 cm Exact Numbers

 Significant Figures

The number of significant figures in the result is the same as in the measurement with the smallest number of decimal places. Adding and Subtracting Rules

The number of significant figures in the result is the same as in the measurement with the smallest number of significant figures. Multiplying and Dividing Rules

When performing multiple step calculations, an overbar should be used to keep track of the significant figures from step to step. Rounding should only be performed when reporting the final answer! Multistep