Transcript DAY 82 - 1.18.11 - Rates and Unit Rates

BELLRINGER – DAY 82
Number
Operations
Algebra
Name the largest prime number less than 50.
Which of the following does NOT describe the expression
a.
c.
n – 45?
n minus 45
n less than 45
b. 45 subtracted from n
d. 45 less than n
Geometry & Find the radius of a circle with an area of 314 square
Measurement inches.
Data,
Statistics &
Probability
Potpourri
What is the median of the heights of the plants in the
table?
Emma was getting married. She was very happy! The total
cost for the wedding was $3,837. She spent $517.55 for
her dress. One-fourth of the remaining money was spent
on flowers. How much money was spent on flowers?
If you could watch a sport in person,
which would you rather watch?
RA – baseball
LA – basketball
RL – football
LL – something else
The square root of ninety-one is
between what two integers?
RA – I know
LA – I don’t know
What type of music would you like
to make?
RA – hip-hop
LA – pop
RL – country
LL – religious
If a = twelve and b = five, then the
difference of a and b is ____.
RA – I know
LA – I don’t know
If you could go to any continent outside
of the Americas, which would it be?
RA – Australia
LA – Europe
RL – Asia
LL – Africa
Sit - Antarctica
Two-thirds of one-sixth is ____.
RA – I know
LA – I don’t know
CLOSURE:
Mr. Owensby is better than any other teacher because he’s
so funny and good-looking (see Notes).
DAY 67
Bellringer:
A:
B:
C:
D:
E:
Matt Owensby
F:
G:
H:
I:
J:
Notes:
Mr. Owensby is the best teacher in the whole world.
He is so funny and good-looking, too!
Assignment: p.376 #2-6; 7-21
2)
3)
4)
Vocabulary
rate
A __________
is a ratio of two quantities
measured in more than one units.
A __________
unit rate is a rate that is a measure for
one particular unit.
To find the unit rate, divide bottom into top or
create equivalent ratios
Find the unit rate for the following:
$54 for 6 hours work
$9
54/6 = ___/hr
Run 68 miles in 4 days
17mi
68/4 = _____/day
20 grams of fat in 8 servings
2.5g
20/8 = _____/serving
Solve the following:
It takes you 1 minute 10 seconds to walk 490
feet. What is your average speed?
490ft/70sec = _____/1sec
7 ft
Which of the following is the better value:
2 batteries for $1.50 or 6 batteries for $4.80?
1.50/2 batteries = _____/1
0.75 battery
4.80/6 batteries = _____/1
0.80 battery
Closure
What’s the difference between rate and unit
rate?