Math help please….?
February 19th, 2010 | by admin |1.Write the prime factorization of the following number.
140
2.A prime number has more than 2 factors.
True
False
3.Convert the following value to scientific notation.
3,245,000
4.Find the greatest common factor (GCF) for each of the following set of numbers:
15, 20 and 40
5.Solve the following equations using the Addition or Subtraction Properties of Equality. Show your work to receive partial credit.
A. 193 + x = 256
B. 623 = x – 71
6.The number that tells us how many times to multiply the base by itself is
a)the constant
b)the multiple
c)the coefficient
d)the exponent
7.A number that is written using powers of 10 is written in
standard form
combined terms
like terms
scientific notation
8.A number that has only 2 factors is called
a prime number
a constant
a composite number
a coefficient
9.A number that is written in regular form is written in
standard form
combined terms
like terms
scientific notation
10.Use the Order of Operations to simplify the following expression. Write your answers in the answer blanks below.
(10-3^2+3)+6^2-23
11.Which is the best definition of a variable.
Numbers that are constant.
Equations that have a letter.
Numbers in a row.
Letters that represent values
12.Find the least common multiple (LCM) for the following set of values:
24 and 42
13.Describe the order of operations.
14.the 2nd step in the order of operations
a)addition and subtraction
b)exponents
c)multiplication and division
d)parenthesis
15.convert the following value to standard form
3.5×10^3
16.the multiplication property of equality allows us to multiply each side of the equation by a number true or false
17.when writing the prime factorization of a number a tool or method that can be used is
a)a factor tree
b)combinig terms
c)substitution
d)grouping items
1 140= 2
x
70 = 7
x
10 = 2
x
5
Prime Factorization of 140 = 2 x 7 x 2 x 5
2 False
3 3245000 in standard form ——> 3.24 x 10^6
4 GCF : 5
* 15 : 1 , 3 , 5 ,15
* 20 : 1 , 2 , 4 , 5 ,10 , 20
* 40 : 1 , 2 , 4 , 5 , 8 ,10 , 20 ,40
5 A: 193 + x = 256
256 – 193 = x
63 = x
B: 623 = x – 71
623 + 71 = x
694 = x
6 D- the exponent
7 NOT sure standard form
8 a prime number
9 
10 ( 10 – 3^2 + 3 ) + 6^2 – 23
( 10 – 36 + 3 ) + 36 – 23
( 4 ) + 36 – 23
17
11 Letters that represent values
12 LCM : 168
24: 24 , 48 , 72 , 96 , 120 , 144 , 168
42: 42 , 84 , 126 , 168
13
14 B exponents
( Please Excuse My Dear Aunt Sally)
( Parenthesis Exponents Multiplication Division Addition Subtraction )
15 Standard Form ( 3.5 x 10^3 ) —–> ( 0.35 x 10^4 )
16 True Multiply , Divide , Subtract , or Add
17 a) a factor tree
Wish it helps.:)
3 Responses to “Math help please….?”
By silentbob40 on Feb 20, 2010 | Reply
I don’t want to complete your homework for you.
You could find a lot of these answers by typing prime numbers into google.
Prime factorization is also pretty straight forward.
To factorise 140 into primes, begin by breaking it down, so:
140 = 14*10
14=7*2
10=5*2
2,5 and 7 are all prime numbers, so the prime factorisation is done:
140=2*2*5*7
The rest you should attempt by yourself first.
I’m sure you’d be able to work a lot out through simple searches.
Hope that helps !
References :
By Dr Octavian on Feb 20, 2010 | Reply
17 questions? get lost. Pick 2 or 3, have a go at them, and come back when you’ve actually tried to do your own homework you lazy bum.
References :
By Lina H on Feb 20, 2010 | Reply
1 140= 2
x
70 = 7
x
10 = 2
x
5
Prime Factorization of 140 = 2 x 7 x 2 x 5
2 False
3 3245000 in standard form ——> 3.24 x 10^6
4 GCF : 5
* 15 : 1 , 3 , 5 ,15
* 20 : 1 , 2 , 4 , 5 ,10 , 20
* 40 : 1 , 2 , 4 , 5 , 8 ,10 , 20 ,40
5 A: 193 + x = 256
256 – 193 = x
63 = x
B: 623 = x – 71
623 + 71 = x
694 = x
6 D- the exponent
7 NOT sure standard form
8 a prime number
9
10 ( 10 – 3^2 + 3 ) + 6^2 – 23
( 10 – 36 + 3 ) + 36 – 23
( 4 ) + 36 – 23
17
11 Letters that represent values
12 LCM : 168
24: 24 , 48 , 72 , 96 , 120 , 144 , 168
42: 42 , 84 , 126 , 168
13
14 B exponents
( Please Excuse My Dear Aunt Sally)
( Parenthesis Exponents Multiplication Division Addition Subtraction )
15 Standard Form ( 3.5 x 10^3 ) —–> ( 0.35 x 10^4 )
16 True Multiply , Divide , Subtract , or Add
17 a) a factor tree
Wish it helps.:)
References :