9.1 BASIC MATH - BASIC MILL OPERATOR
A steel ruler, or steel rule, found in a machine shop is also referred to as a: - ANS-A
scale
An important conversion in a machine shop is millimeters to inches. How many
millimeters are in one inch? - ANS-25.4
In the thread callout 1/4-20, what does the 20 stand for? - ANS-There are 20 threads
per inch
In the video, there was a need for a 3/8" drill. What is the decimal equivalent for 3/8"? -
ANS-.375
It is helpful to have a Fraction-Decimal Conversion Chart in the shop, as a guide. -
ANS-True
It is important to be able to estimate how long a job will run, based on the total number
of parts needed and how many you can run per hour or day. - ANS-True
It is important to be able to read a tape measure when you are asked to find the correct
raw material from the raw material inventory. To read the tape measure, it is important to
understand the divisions on the tape. Typically, the smallest division on a tape measure
is: - ANS-1/16"
It is not important to be able to convert fractions to decimals in the machine shop
environment. - ANS-False
There are two types of scales that are common when dealing with "inches" in a machine
shop. The two types are: - ANS-A fractional scale and a decimal scale
This video outlined the minimum math skills you will need to work in a machine shop.
For additional math skills, we suggest that you: - ANS-Use a simple Google or YouTube
search to find the necessary additional help
When the Metric System is in use in the machine shop, the size of the part is usually
shown in: - ANS-Millimeters (mm)
A steel ruler, or steel rule, found in a machine shop is also referred to as a: - ANS-A
scale
An important conversion in a machine shop is millimeters to inches. How many
millimeters are in one inch? - ANS-25.4
In the thread callout 1/4-20, what does the 20 stand for? - ANS-There are 20 threads
per inch
In the video, there was a need for a 3/8" drill. What is the decimal equivalent for 3/8"? -
ANS-.375
It is helpful to have a Fraction-Decimal Conversion Chart in the shop, as a guide. -
ANS-True
It is important to be able to estimate how long a job will run, based on the total number
of parts needed and how many you can run per hour or day. - ANS-True
It is important to be able to read a tape measure when you are asked to find the correct
raw material from the raw material inventory. To read the tape measure, it is important to
understand the divisions on the tape. Typically, the smallest division on a tape measure
is: - ANS-1/16"
It is not important to be able to convert fractions to decimals in the machine shop
environment. - ANS-False
There are two types of scales that are common when dealing with "inches" in a machine
shop. The two types are: - ANS-A fractional scale and a decimal scale
This video outlined the minimum math skills you will need to work in a machine shop.
For additional math skills, we suggest that you: - ANS-Use a simple Google or YouTube
search to find the necessary additional help
When the Metric System is in use in the machine shop, the size of the part is usually
shown in: - ANS-Millimeters (mm)
