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8th Grade Unit 1 Review! Flashcards | StudBud
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8th Grade Unit 1 Review!
8th Grade Unit 1 Review!
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#math #8thgrade
Flashcards
41 cards
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Questions
41
Answers
1
Find the algebraic expression
x2 + 2
2 ⋅ 34 + 56 ÷ 9
36 - 2
(2 + 3)2
2
What sign will the answer to a multiplication problem with 2 negative factors have?
neutral
there is no trick to remember this answer
negative
positive
3
an algebraic expression has to have at least one number, one math operation and...
peanut butter
a variable
an answer
an equals sign
4
2 numbers multiplied together to form a product is called...
integers
variables
addends
factors
5
What does Understand mean in the 4 step method for problem solving?
Read the directions and question carefully.
You already understand the problem and solution.
You know it is time for the class to be over.
You understand when it is time to skip to the next step
6
What are the 4 steps in our problem solving plan?
Understood, Prioritize, Submit, Challenge
Understand, Plan, Solve, Check
Unknown, Pecans, Sand, Cash
Understand, Know, Solve, Continue
7
What operation uses products?
subtraction
addition
multiplication
division
8
The trick for completing a subtraction of a negative value looks like?
Understand, Plan, Solve, Check
there is no trick
change - ( - to + ( +
move left always
9
What step is next in this problem? [ 3 - 4 ⋅ 5
2
] ÷ 6
4 ⋅ 5
3 - 4
52
5 ÷ 6
10
If a multiplication problem has 3 negative numbers, what sign will the answer be?
neutral
you don't change the sign
positive
negative
11
5 + 4(3)
2
What step do i perform first?
4 ⋅ 3
122
5 + 4
32
12
when working a math problem, what is the first step in the Order of Operations?
multiplication and division
parenthesis
exponents
addition and subtraction
13
When plugging in values for variables, what is important to add as well?
parenthesis
an extra equals sign at the end
snacks
the answer
14
What does "solve an equation" mean?
Isolate the variable
locate the equals sign
rewrite the question and hope Mr. C does not notice...
do math
15
what is the exponent in this problem? 78
63
63
18
3
78
16
what basic math operations are represented by exponents?
repeated multiplication and division
repeated addition and subtraction
subtraction
multiplication
17
what is the special name given to an exponent to the 3rd power?
triangled
powered
cubed
rounded
18
a + b = b + a What property is shown?
identity
commutative
distributive
associative
19
which of these is a numerical expression?
x2
a + b ⋅ 32 - c ÷ 2
4 + 7 ⋅ x2 - 5 ÷ 2
4 + 7 ⋅ 32 - 5 ÷ 2
20
in what direction do we solve multiplication and division while using the Order of Operations?
right to left
bottom to top
any direction
left to right
21
What is the name of this math sign?
checkmark
division
radical
22
What parts make up an equation?
a variable and an operation
equality
2 expressions separated by an equals sign
a function rule
23
What is a variable?
an ingredient used when baking cookies!
a letter of an unknown value
a number that solves the problem
a word that describes how able someone is... very able!
24
Which of these are valid problem solving strategies
use a graph
guess and check
estimate reasonable answers
look for a pattern
25
What step do most students skip in the 4 step problem solving method?
Plan
Solve
Understand
Check
26
If you are given the area of a square, how do you find the length of one side?
there is not enough information
take the square root of the area
guess until it looks almost correct
divide by 4 sides
27
What do we do first in this problem? [ 3 - 4 (2 + 3)
2
] ÷ 6
32
4 ⋅ 2
2 + 3
3 - 4
28
What is the acronym for the Order of Operations?
LIVMAS
KHDMDCM
PEMDAS
MVEMJSUN
29
a + 0 = a What property is shown?
associative
commutative
distributive
identity
30
Are you enjoying still math class?
Kind of, but you are losing my interest Mr. C...
I never stopped!
not really, but I'm too nice to say no...
Yes, even though it is harder...
31
what is the special name given to an exponent of the 2nd power?
rectangled
circled
cubed
squared
32
a (b + c) = ab + ac What property is shown?
associative
identity
distributive
commutative
33
what is the base in this exponential problem? 42
7
27
7
4
42
34
a + (b + c) = (a + b) + c What property is shown?
distributive
identity
associative
commutative
35
standard form of 4
8
8 ⋅ 8 ⋅ 8 ⋅ 8
8 ⋅ 8 ⋅ 8 ⋅ 8 ⋅ 8 ⋅ 8 ⋅ 8 ⋅ 8
4 ⋅ 8
4 ⋅ 4 ⋅ 4 ⋅ 4 ⋅ 4 ⋅ 4 ⋅ 4 ⋅ 4
36
When forming an equation from a word problem, what is important to do?
word problems are not important
pick variables that look like numbers to confuse Mr. C
Check if it makes sense
make sure your equation has an operation with the variable
37
What step do we need to perform next? [ 3 - 100
] ÷ 6
100 ÷ 6
3 ⋅ 6
3 - 100
38
what is exponential form of 3 ⋅ 3 ⋅ 3 ⋅ 3 ⋅ 3
5 ⋅ 3
35
3 ⋅ 5
53
39
what branch of mathematics does algebra represent?
everything
geometry
statistics
math with letters
40
What step do we perform [ 3 - 4 ⋅ 25 ] ÷ 6
solve
4 ⋅ 25
25 ÷ 6
3-4
41
When adding a negative number to any value, what direction do you move on the number line?
to the right
to the left
pecan sandies!
plus a positive
