Measurement and the metric system

Just fill in the report measuring things around your house. Do not do questions number 5 and 9 concerning cubes. Please write in pen and please send back as a pdf. Please watch out for significant numbers. The report starts from page 12-26. Its the first lab. This is what the professor wrote:
n a metric, each small grid is 0.1 cm
this is exact measurement
the second digit after the decimal will be eastimated digit
2 placed after the decimal in a metric ruler in centimeter reading, same thing will be with meter stick in centimeter reading
graduated cylinder reading: one decimal place  (50-mL 100-mL grad cylinders)
20.0 mL, 21.0 mL, 25.5 mL, 30.1 mL
beaker: no decimal place in a beaker reading
two decimal places in digital scale
record every digit from the scale
example: 5.00 g
if you 5 g, then it is not correct
lab report: 12-26
pre-lab and post lab questions must be completed
strike down nop 5 and no. 9