# Math Tools Quiz – Chapter 1

 significant figures
 provide information on the precision of a measurement
 precision of a measurement
 include all digits in a measurement which are known with certainty, plus a last digit which must be estimated
 digital device
 number of significant figures is everything that is shown
 all places that are marked, plus one visually estimated
 always significant
 zeroes in the middle of a number
 never significant
 zeroes at the beginning of a number
 significant only if there is a decimal point in the number
 zeroes at the end of a number
 no more significant figures than the least precise number
 for division and multiplication problems
 no fewer decimal places than either of original numbers
 for addition and subtraction problems
 exact numbers
 numbers with no uncertainty. Ex: equivalence statement
 Marvelous king hector died by drinking chocolate milk monday night
 number line phrase
 Mega, space, space, kilo, hecta, deka, base, deci, centi, milli, space, space, micro, space, space, nano
 Metric conversion number line