Transcript least common multiple

Numbers and
Operations
Measurement
Geometry
Patterns,
Functions,
Algebra
Data
Analysis
Probability
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What is another way to write
6+6+6+6+6=n
Solve!
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Another way to write it is:
6X5=n
Multiplication is repeated addition.
6+6+6+6+6 =n
Solve:
6 X 5 = 30
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The Colerain Cardinal PTA bought a rug for
the library. How many square feet is the
rug?
40 feet
15
feet
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You should use measured by using
the perimeter formula.
(Length + Width) X 2
(40 ft + 15 ft) X 2
55 ft X 2 = 110
2
ft
Or 40 + 40 + 15 + 15 = 110
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ft2
Name two ways a rhombus and
a square are alike?
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Ways a rhombus and
square are alike:
- Quadrilaterals
- Polygons
- 4 Equal sides
- Parallelograms
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There are 26 students in our class. Eleven
students like chocolate ice cream only. Eight
students like vanilla ice cream only. Some
students like both chocolate and vanilla.
Which Venn Diagram represents this data?
A. Chocolate Vanilla
11
88V8
C. Chocolate Vanilla
8 7 11
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B.
Chocolate Vanilla
11
D.
7
11
Chocolate Vanilla
11 7 8
D is the correct Venn
Diagram
Remember that there are 26
students in the class.
11 + 7 + 8 = 26
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What is the probability of the
spinner landing on orange?
QuickTime™ and a
decompressor
are needed to see this picture.
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The probability of the spinner
is 1 out of 5, or 1/5.
BONUS: 100 points
1/5 = 2/10 = 20/100
This means it has a 20%
chance of landing on orange.
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Josie walked her neighbor’s
dog for 7 days while they were
on vacation. Her neighbor
paid Josie $1.25 for each day
she walked the dog. How
much money did Josie earn?
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You have to multiply 7 X $1.25.
Strategy:
Forget about the decimal for now
Multiply:
125
X 7
875
Now place your decimal 2 places from
the left!
$8.75
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Kyle measured an object and found it
to be 100 cubic centimeters. Which
could Kyle have measured?
A. Time
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B. Road
C. Present
Kyle measured a present because
you use cubic centimeters to find
volume.
Volume =
Length X Width X Height
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Roy drew a triangle with
exactly two congruent angles
and two congruent sides.
What kind of triangle did Roy
draw according to the lengths
of its sides? Angles?
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An isosceles triangle has
two congruent (equal)
sides.
An acute triangle has
angles less than 90º.
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Find the missing number in the
table and write the equation.
x
y
3
12
6
24
9
36
12
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The missing number is 48 and
the equation is y = 4x.
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x
y
3
12
6
24
9
36
12
48
Fred recorded the heights, in inches, of the
students in his class. The range was 15.
What statement is true about Fred’s data?
A. Fred found that 15 students are all the same
height.
B. The height of the shortest student is 15 inches.
C. Fred recorded the heights of 15 students in his
class.
D. The tallest student is 15 inches taller than
the shortest student.
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The answer is D.
Range =
Tallest Student – Shortest Student =
15 inches
Highest number - Lowest number
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Aaron saved $60 to buy an
airplane models for his
collection. The cost of each
model with tax included is $7.
How many models can he buy?
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Does ÷
McDonald X
Serve Cheese √
Burgers
Repeat ®
60 ÷ 7 = 8 r 4, so he can buy 8.
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Which unit is appropriate for
measuring the area of the
bottom of a pan?
QuickTime™ and a
decompressor
are needed to see this picture.
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Area is measured in square
units, so the pan could be
measured in square inches,
or square centimeters.
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Give three reasons why the following
geometric shapes are polygons.
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A polygon has:
- line segments
- closed figure
- more than two sides.
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Riley is making a pattern with
numbers.
3, 12, 21, 30
What is the rule for this pattern?
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The rule is add 9.
3 + 9 = 12
12 + 9 = 21
21 + 9 = 30
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Jack’s Easter Egg Hunts
How many orange and yellow
eggs did Jack find in 2009?
100
90
80
70
60
50
40
30
20
10
0
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Y ellow
Green
Orange
2006
2007
2008
2009
You add the orange and green
eggs in 2009.
80 + 20 = 100 green eggs.
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Shelby went to the store and
bought a candy bar for $.99, a
Gatorade for $1.19, a bag of
Doritos for $2.29.
She gave the clerk a 5 dollar bill.
How much change did she
receive?
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Line up your decimals and add
and then subtract from $5.00.
.99
5.00
1.19
- 4.57
+2.29
4.57
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$.43 is the answer.
The length of each side of the
rectangle is 12 in. and the width
is 9 in. Find the perimeter and
area.
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The perimeter is the distance around
the sides of a shape so it is
12 + 12 + 9 + 9 or
12
(12 + 9) X 2 = 42 in.
9
The area of a rectangle is
length x width so it is
12 x 9 = 108 in.²
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How many faces does a rectangular prism
have?
How many edges does a rectangular
prism have?
How many vertices does a rectangular
prism have?
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A rectangular prism has 6 faces, 8
vertices and 12 edges.
Euler’s formula = (F + V) - E = 2
(6 + 8) - 12 = 2
QuickTime™ and a
decompressor
are needed to see this picture.
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Raymond’s has these notebooks and pens in his
backpack..
Raymond’s Backpack
Notebook
Pens
Science
Blue
Reading
Green
Writing
Red
List all the possible combinations of one notebook
and one pen that Raymond could take out?
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Make an organized list.
Science Book and Blue Pen
Reading Book and Green Pen
Writing Book and Red pen
Science Book and Green Pen
Reading Book and Red pen
Writing Book and Blue pen
Science Book and Red Pen
Reading Book and Blue Pen
Writing Book and Green pen
There are 9 different combinations.
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Which is greater
2/3 or 3/4?
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Cross Multiply
2
3
3
4
3/4 is greater than 2/3.
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William saw two shapes on a
coordinate grid.
Which transformation could William
use to determine whether the two
shapes are congruent?
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To determine if the two shapes are
congruent you would use a reflection
( flip).
Remember congruent means equal!
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How many faces does a square
pyramid have?
How many vertices does a square
pyramid have?
How many edges does a square
pyramid have?
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A square pyramid has 5 faces, 5 vertices
and 8 edges.
Euler’s formula = (F + V) - E = 2
(5 + 5) - 8 = 2
10 - 8 = 2
QuickTime™ and a
decompressor
are needed to see this picture.
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What is the least common
multiple of 4 and 5?
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List all the multiples of 4 and 5.
Circle all the multiples that they
have in common. The lowest one is
the least common multiple.
4, 8, 12, 16, 20, 24, 28, 32
5, 10, 15, 20, 25, 30
The least common multiple is 20.
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Phil has a bag with 9 pennies, 7
nickels, 7 quarters, and 2 half-dollars.
He draws out a coin without looking.
What is the probability that Phil will
pick out a quarter or a nickel?
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The total number of coins is 25.
The likelihood of picking a quarter
or nickel would be 14/25, or 56%.
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