What is the area formula for a triangle?
A = 1/2bh
What are the rules for adding integers?
positive + positive = positive
negative + negative = negative
positive + negative = Take the absolute value of both numbers, subtract, and keep the sign of the larger integer.
negative + positive = Take the absolute value of both numbers, subtract, and keep the sign of the larger integer.
What is the GCF of 21 and 30
The GCF is 3
What property is this?
15 + 6 + 9 = 15 + 9 + 6
The Commutative Property of Addition
In which quadrant would the following ordered pair be in?
(2, 3)
Quadrant I
What is the area formula for a trapezoid?
A = 1/2(b1+b2)h
What are the rules for subtracting integers?
KCF
Keep the first integer as is
Change the operation to addition
Flip the sign of the second integer
Then go back to the rules for adding integers
What is the LCM of 15 and 60?
60 is the LCM
What property is this?
3 x (6 x 4) = (3 x 6) x 4
The Associative Property of Multiplication
Write an algebraic expression for the following verbal expression:
the difference of x and 7
x - 7
What is the area of the following figure?
A = 1/2bh
A = 1/2(12)(8)
A = (6)(8)
A = 48 cm2
What are the rules for multiplying and dividing integers?
If the sign is the same (both positive or both negative), the answer is positive.
If the sign is different (one negative and one positive), the answer is negative.
What is the LCM of 20, 25, and 15?
The LCM is 300
What property is this?
6(10 + 7) = 60 + 42
The Distributive Property
Write the following algebraic expression as a verbal expression:
5x + 7
The product of 5 and x plus 7
The sum of 5 times x and 7
What is the area of the following figure?
A = 1/2(b1+b2)h
A = 1/2(12+15)(6)
A = 1/2(27)(6)
A = (27)(3)
A = 81cm2
16 - 87
K C F
16 - 87
16 + -87
87 - 16 = 71
Keep the sign of the larger integer (87)
The answer is -71
Simplify the following fractions using the GCF:
35/84
45/72
28/70
35/84 = 5/12
45/72 = 5/8
28/70 = 2/5
What property is this?
16 + 0 = 16
The Additive Identity Property
When a point is reflected across the x-axis, which value in an ordered pair changes to its opposite?
The y-value
What is the area of the following figure?
Rectangle (A=lw) and Trapezoid (1/2(b1+b2)h)
A = 10x5 + 1/2(7+10)(4)
A = 50 + 1/2(17)(4)
A = 50 + 1/2(68)
A = 50 + 34
A = 84 in2
Solve the following:
-164 / -4
41
Both signs are negative. Same sign, positive answer.Solve the following problem:
What property is this?
18 x 1 = 18
The Multiplicative Identity Property
What is a statistical question?
AND
Is the following question a statistical question?
How many cars were sold this month?
A statistical question is one that anticipates variability in the data collected.
No, that is not a statistical question.