wed 8/28 or thur 8/29 any classroom supplies you have brought will be collected later, hang on to...
DESCRIPTION
Your first packet Assignment page—it will be very useful! Unit organizer—know what we are covering Karma questions—review! The notes and practiceTRANSCRIPT
Wed 8/28 or Thur 8/29
• Any classroom supplies you have brought will be collected later, hang on to them.
• Prepare for Elements Quiz 1– Quiz will begin 2 minutes after the bell– Timed quiz: 5 minutes
• Let’s grade it!
Now that you’ve practiced!
• The real quiz will be at the end of the period.• 5 minutes to take.
• No this one does not count, even if you made a 100.
Your first packet
• Assignment page—it will be very useful!
• Unit organizer—know what we are covering
• Karma questions—review!
• The notes and practice
Rounding Numbers
Rounding a number is when you take a number and
"bump it up" or "bump it down" to a nearby and
"cleaner" number.
$4.99 rounds up to $5
$9.02 rounds down to $9
Rounding Numbers
A number can be rounded to any place
value you want.
Car prices:$13,473.99 can round to
Ones place: $13,474Tens place: $13,470
Hundreds place: $13,500Thousands place: $13,000
Rounding Numbers
Rounding means reducing the digits in a number while trying to keep its value similar.
Calculator answers:5.2847284729 can round to
One decimal place: 5.3Two decimal places: 5.28
Three decimal places: 5.285No decimal places: 5
How to Round Numbers• Decide which is the last digit to
keep• Leave it the same if the next
digit is less than 5 • This is called rounding down
Example: Round 74 to the nearest 10
74
Answer: 70 (74 gets "rounded down")
keep
< 5
How to Round Numbers• Decide which is the last digit to
keep• Increase it by 1 if the next digit
is 5 or more • This is called rounding up
Example: Round 86 to the nearest 10
86
Answer: 90 (86 gets "rounded up")
keep
> 5
Do you know your places?In your groups, work on the examples. Be sure you all agree on your answers and your
reasoning (the because column)
Rounding Exit Ticket
• On a post it, write your name, then copy what is below.
Original: 1568.234 Rounded to hundredths: Rounded to hundreds:
Brain Pop!
Page 8 in packet
Time to Multi-taskEDMODO SIGN UP
• Take ONLY the computer # you have been assigned (see binder on COW cart)
• If you don’t have your syllabus go to the class website: beattybowie.weebly.com
• Logon to Edmodo– Join the correct group– Change notifications to
receive as text/email
COPY DOWN YOUR LOC LISTQuiz next class period (Fri/Tues)
CLASSROOM SUPPLIESBring them up.
STUDY FOR YOUR ELEMENTS QUIZ
ROUNDING PACKET HOMEWORKPage 3 a.-i.
When you are completely done with the laptops, DO NOT LOG OFF. Instead please SHUT DOWN
Elements Quiz #1
• Timed: 5 minutes
• This one counts! (no pressure)
Language of Chemistry (LoC) List 1
x2 The “2” is a subscript (s) solid. written after a chemical formula
x2 The “2” is a superscript (l) liquid. written after a chemical formula
2x The “2” is a coefficient (g) gas. written after a chemical formula
→ “yield”; shows a chemical reaction took place
(aq) aqueous. written after the formula for a chemical dissolved in water.
Chemical formula A2B, element symbols and subscripts
Chemical equation 2A + B → A2B, chemical formulas, a yield sign, and coefficients (usually)
Exit Ticket and Homework
Homework• Finish page 3 a-i• Study for LoC List #1 quiz on Fri/Tues