Question about Staples SPLP500 Scientific Calculator

Both numbers are even, so let's start by dividing by 2.

$9.08 to $8.24

Both numbers still even, divide by 2 again.

$4.54 to $4.12

Both numbers still even, divide by 2 again!

$2.27 to $2.06

One number is not even, so we don't need to divide by an even number again.

To see if 3 goes into the numbers evenly, add up the digits of the number and see if 3 goes into the total evenly. If yes, the number is divisible by 3.

2+2+7= 11, 1+1 = 2. 3 does not go evenly into 2, therefore 3 does not go evenly into $2.27.

Numbers don't end in 0 or 5, so 5, 10 and 15 do not go into them evenly.

7 does not go in evenly

To see if 9 goes into the numbers evenly, add up the digits of the number and see if 9 goes into the total evenly. If yes, the number is divisible by 9.

We added up the digits and got 11, so 9 does not go in evenly into $2.27.

See if 13 goes into the numbers evenly. No.

See if 17 goes into the numbers evenly. No.

When do we stop? 17 squared is 289, which is higher than both numbers so we can stop!

We have the number in lowest terms at $2.27 to $2.06.

Good luck.

Paul

$9.08 to $8.24

Both numbers still even, divide by 2 again.

$4.54 to $4.12

Both numbers still even, divide by 2 again!

$2.27 to $2.06

One number is not even, so we don't need to divide by an even number again.

To see if 3 goes into the numbers evenly, add up the digits of the number and see if 3 goes into the total evenly. If yes, the number is divisible by 3.

2+2+7= 11, 1+1 = 2. 3 does not go evenly into 2, therefore 3 does not go evenly into $2.27.

Numbers don't end in 0 or 5, so 5, 10 and 15 do not go into them evenly.

7 does not go in evenly

To see if 9 goes into the numbers evenly, add up the digits of the number and see if 9 goes into the total evenly. If yes, the number is divisible by 9.

We added up the digits and got 11, so 9 does not go in evenly into $2.27.

See if 13 goes into the numbers evenly. No.

See if 17 goes into the numbers evenly. No.

When do we stop? 17 squared is 289, which is higher than both numbers so we can stop!

We have the number in lowest terms at $2.27 to $2.06.

Good luck.

Paul

Mar 25, 2015 | Office Equipment & Supplies

Let's start by setting up the binary columns.

2^0 = 1

2^1 = 2

2^2 = 4

2^3 = 8

2^4 = 16

2^5 = 32

2^6 = 64

2^7 = 128

Written horizontally.

128 64 32 16 8 4 2 1

1 1 1 1 1 1 1

What is the biggest number that goes into 127. 64. Put 1 in the 64s column. 127 - 64 = 63.

What is the biggest number that goes into 63. 32. Put 1 in the 32s column. 63 - 32 = 31.

What is the biggest number that goes into 31. 16. Put 1 in the 16s column. 32 - 16 = 15.

What is the biggest number that goes into 15. 8. Put 1 in the 8s column. 15 - 8 = 7.

What is the biggest number that goes into 7. 4. Put 1 in the 4s column. 7 - 4 = 3.

What is the biggest number that goes into 3. 2. Put 1 in the 2s column. 3 - 2 = 1.

Put a 1 in the 1s column.

So we have 1111111 in binary.

Good luck.

Paul

2^0 = 1

2^1 = 2

2^2 = 4

2^3 = 8

2^4 = 16

2^5 = 32

2^6 = 64

2^7 = 128

Written horizontally.

128 64 32 16 8 4 2 1

1 1 1 1 1 1 1

What is the biggest number that goes into 127. 64. Put 1 in the 64s column. 127 - 64 = 63.

What is the biggest number that goes into 63. 32. Put 1 in the 32s column. 63 - 32 = 31.

What is the biggest number that goes into 31. 16. Put 1 in the 16s column. 32 - 16 = 15.

What is the biggest number that goes into 15. 8. Put 1 in the 8s column. 15 - 8 = 7.

What is the biggest number that goes into 7. 4. Put 1 in the 4s column. 7 - 4 = 3.

What is the biggest number that goes into 3. 2. Put 1 in the 2s column. 3 - 2 = 1.

Put a 1 in the 1s column.

So we have 1111111 in binary.

Good luck.

Paul

Oct 02, 2014 | Office Equipment & Supplies

That depends on the problem.

A mixed number is a number composed of an integer part and a proper fraction (fraction where the numerator is less than the denominator

A measure gives you 1 foot and 1/ 2 foot. Instead of writing 1.5 feet some people write 1 1/2. If you don't like mixed number you can convert them into improper fractions (fraction where the numerator is greater than the denominator.

1 1/2=1+1/2=(1*2+1)2=3/2

If you use them in a subtraction you should be careful because

7- 5 1/2=7-(5+1/2)=7-5 -1/2=2-1/2=(2*2-1)/2=3/2

You can multiply them, divide them, but any other operation quickly becomes ridiculously complicated. Some people like to use them. I don't much care for them.

In multiplication and division the general rule is to convert every number into its (reduced) improper fraction equivalent and then operate, using the rules for manipulating fractions.

A mixed number is a number composed of an integer part and a proper fraction (fraction where the numerator is less than the denominator

A measure gives you 1 foot and 1/ 2 foot. Instead of writing 1.5 feet some people write 1 1/2. If you don't like mixed number you can convert them into improper fractions (fraction where the numerator is greater than the denominator.

1 1/2=1+1/2=(1*2+1)2=3/2

If you use them in a subtraction you should be careful because

7- 5 1/2=7-(5+1/2)=7-5 -1/2=2-1/2=(2*2-1)/2=3/2

You can multiply them, divide them, but any other operation quickly becomes ridiculously complicated. Some people like to use them. I don't much care for them.

In multiplication and division the general rule is to convert every number into its (reduced) improper fraction equivalent and then operate, using the rules for manipulating fractions.

Jan 09, 2014 | Office Equipment & Supplies

Multiplying by 2 is different from raising a number to power 2 (squaring).

To raise a number to power 2, you enter the number then press the [X^2] key.

To multiply a number by 2, you type in the number, you press the multiplication sign (x) then you enter 2. Press = or EXE.

To raise a number to power 2, you enter the number then press the [X^2] key.

To multiply a number by 2, you type in the number, you press the multiplication sign (x) then you enter 2. Press = or EXE.

Jul 14, 2012 | Canon Office Equipment & Supplies

"Prime Factorization" is finding **which prime numbers** multiply together to make the original number.

Example : What are the prime factors of 12 ?
It is best to start working from the smallest prime number, which is 2, so let's check:

12 ÷ 2 = 6

Yes, it divided evenly by 2. We have taken the first step!

But 6 is not a prime number, so we need to go further. Let's try 2 again:

6 ÷ 2 = 3

Yes, that worked also. And 3 **is** a prime number, so we have the answer:

**12 = 2 × 2 × 3**

As you can see, **every factor** is a **prime number**, so the answer must be right.

Note: **12 = 2 × 2 × 3** can also be written using exponents as **12 = 22 × 3**

Jun 22, 2011 | Computers & Internet

First you need the same number in the denominator (the bottom number) in order to do calculations.

In looking at the denominators ( 4 and 8 ) we know that one way for them to be equal is 4 x 2 = 8. In order

to times the denominator by 2 we also need to times the numerator (top number) by two. We do this because

you can times any number by 1 and it is the same number. So to do this we will times 3/4 by 2/2.

This is acceptable because 2/2 = 1 . so 3/4 x 2/2 (in multiplying fractions just times across or multiply the top

numbers together and multiply the bottom numbers) = (3 x 2) / (4 x 2) this simplifies into (6) / (8) or 6/8.

Now we can look at 6/8 - 1/8. Because the denominators are now the same we can subtract the

numerators, 6/8 - 1/8 = (6-1) / 8 this is 5/8. Thus, 3/4 - 1/8 = 5/8 .

In looking at the denominators ( 4 and 8 ) we know that one way for them to be equal is 4 x 2 = 8. In order

to times the denominator by 2 we also need to times the numerator (top number) by two. We do this because

you can times any number by 1 and it is the same number. So to do this we will times 3/4 by 2/2.

This is acceptable because 2/2 = 1 . so 3/4 x 2/2 (in multiplying fractions just times across or multiply the top

numbers together and multiply the bottom numbers) = (3 x 2) / (4 x 2) this simplifies into (6) / (8) or 6/8.

Now we can look at 6/8 - 1/8. Because the denominators are now the same we can subtract the

numerators, 6/8 - 1/8 = (6-1) / 8 this is 5/8. Thus, 3/4 - 1/8 = 5/8 .

Mar 29, 2011 | Office Equipment & Supplies

Check my work, to make sure that I did it correctly:

X + Y = 60 and 2 * X - Y = 82.5

2 * X + 2 * Y = 2 * 60 and 2 * X - Y = 82.5

2 * X + 2 * Y - 2 * X - (-Y) = 2 * 60 - 82.5

2 * X - 2 * X + 2 * Y + Y = 46.5

3 * Y = 46.5

Y = 15.5

QED. :-)

X + Y = 60 and 2 * X - Y = 82.5

2 * X + 2 * Y = 2 * 60 and 2 * X - Y = 82.5

2 * X + 2 * Y - 2 * X - (-Y) = 2 * 60 - 82.5

2 * X - 2 * X + 2 * Y + Y = 46.5

3 * Y = 46.5

Y = 15.5

QED. :-)

Sep 13, 2010 | Microsoft Windows XP Professional

no decimals (1.5, .56) no fractions (1/2, 1 3/4)

whole numbers are just whole numbers

1, 2, 3 and on 9,10,11 .....

not

1.5, 2.5, 2.356

1 1/5, 2 2/6,3 1/5

whole numbers are just whole numbers

1, 2, 3 and on 9,10,11 .....

not

1.5, 2.5, 2.356

1 1/5, 2 2/6,3 1/5

Jun 19, 2010 | Mathsoft StudyWorks! Mathematics Deluxe...

3 digit number in n base .

first max numbers (n-1)n^2 because we must exclude from start one and 2 digit numbers,

we start from the big numbers. For xxy values , x=1 to n we have (n-1)n, n-1 to cover for x values and n for y.There are n-1 values of xxx(when y=x) .

For yxx case we have n-1 for y and n for x. There are also n-1 values for xxx . In the final we have number of cases for xxy+ number of cases for yxx - xxx number of cases (to avoit put it twice) , that means 2(n-1)n-n=

n(2n-3) . For n=10 we have 170 numbers.If n=2 {0,1} elements we have 2*1=2 numbers -- of course 110 and 100. And so on...

first max numbers (n-1)n^2 because we must exclude from start one and 2 digit numbers,

we start from the big numbers. For xxy values , x=1 to n we have (n-1)n, n-1 to cover for x values and n for y.There are n-1 values of xxx(when y=x) .

For yxx case we have n-1 for y and n for x. There are also n-1 values for xxx . In the final we have number of cases for xxy+ number of cases for yxx - xxx number of cases (to avoit put it twice) , that means 2(n-1)n-n=

n(2n-3) . For n=10 we have 170 numbers.If n=2 {0,1} elements we have 2*1=2 numbers -- of course 110 and 100. And so on...

Mar 07, 2010 | Philips Computers & Internet

The function is: f(n) = (n-th triangular number) ^ 2

So, f(1) = (first triangular number) ^ 2

the '^ 2' means "multiply the number by itself", e.g., '3^2' is '9'.

And, f(2) = (second triangular number) ^ 2

and, f(3) = (third triangular number) ^ 2

So, what is a "triangular number" ?

Do an Internet search for "definition triangular number",

and you may find the web-page;

http://www.mathsisfun.com/definitions/triangular-number.html

which gives a definition, plus pictures to help you visualize why they are called "triangular". Hint: a "tri-angle" has 3 sides, while a "quad-rangle" has 4 sides.

So, f(1) = (first triangular number) ^ 2

the '^ 2' means "multiply the number by itself", e.g., '3^2' is '9'.

And, f(2) = (second triangular number) ^ 2

and, f(3) = (third triangular number) ^ 2

So, what is a "triangular number" ?

Do an Internet search for "definition triangular number",

and you may find the web-page;

http://www.mathsisfun.com/definitions/triangular-number.html

which gives a definition, plus pictures to help you visualize why they are called "triangular". Hint: a "tri-angle" has 3 sides, while a "quad-rangle" has 4 sides.

Sep 24, 2009 | M2K Garfield: It's All About Math Math...

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