Question about Texas Instruments TI-83 Plus Calculator

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If you are asking "What is 40 divided by 1/2".....

input 1: 40 / .5
input 2: 40 / (1/2)

Answer in both cases is 80.

OR

If you are asking "What is 40 divided into 1/2"......

input 1: .5 / 40
input 2: (1/2) / 40

Answer in both cases is 1/80 or .0125

Posted on Mar 14, 2011

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Posted on Jan 02, 2017

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I don't know if it just me, but when doing these questions, I always think about PIZZA.

You have one pizza divided into 5 equal pieces, and 3 are gone, leaving 2. The other pizza is divided into 8 equal pieces and only 1 piece is left.

You have the pizza cutter in your hand. How many pieces do you have to cut each pizza into to be able to describe how much pizza you have in total?

In this case, you would have to cut each pizza into 40 pieces. To determine that it is 40, we do the multiples of 5, being 5, 10, 15, 20, 25, 30, 35, 40, 45, etc. We also do the multiples of 8, being 8, 16, 24, 32, 40, 48. What is the first number that is common to both lists? In this case, it is 40.

Since we have to multiply the 5 by 8 to get 40, we have to multiply the 2 by 8 to get the numerator. We have to do the same with 1/8.

Good luck.

Paul

You have one pizza divided into 5 equal pieces, and 3 are gone, leaving 2. The other pizza is divided into 8 equal pieces and only 1 piece is left.

You have the pizza cutter in your hand. How many pieces do you have to cut each pizza into to be able to describe how much pizza you have in total?

In this case, you would have to cut each pizza into 40 pieces. To determine that it is 40, we do the multiples of 5, being 5, 10, 15, 20, 25, 30, 35, 40, 45, etc. We also do the multiples of 8, being 8, 16, 24, 32, 40, 48. What is the first number that is common to both lists? In this case, it is 40.

Since we have to multiply the 5 by 8 to get 40, we have to multiply the 2 by 8 to get the numerator. We have to do the same with 1/8.

Good luck.

Paul

Mar 06, 2016 | Office Equipment & Supplies

Hi Tammy:

Here's what I would do.

1) 1500 divided by 3 equals 500

that would leave 124

2) 120 divided by 3 equals 40

That leaves 4

3) 4 divided by 3 equals 1

with 1 remaining.

putting the quotients together you get 541

with 1 remaining.

All can be done mentally with no calculator and basic multiplication tables that most school children memorize.

Is this what you were looking for?

Cheerfuls.

Here's what I would do.

1) 1500 divided by 3 equals 500

that would leave 124

2) 120 divided by 3 equals 40

That leaves 4

3) 4 divided by 3 equals 1

with 1 remaining.

putting the quotients together you get 541

with 1 remaining.

All can be done mentally with no calculator and basic multiplication tables that most school children memorize.

Is this what you were looking for?

Cheerfuls.

Jan 27, 2016 | Computers & Internet

Divide 100 by 40. You get 2.5. Now, multiply 30 by 2.5. You get 75, which is the percent of distributed flyers.

Jan 02, 2015 | Office Equipment & Supplies

Divide by 100. For example, take 40%. Divide 40 by 100 and get 0.40 .

Jul 29, 2012 | Casio FX-115MS Plus Calculator

1.24274547 miles for 2 km.

8 km equells 5 miles so always multiply or divide accordingly i.e 40 km divide by 8 equells 25 miles (5 x 5) (5 eights into 40) just reverse for miles to Km. ok

8 km equells 5 miles so always multiply or divide accordingly i.e 40 km divide by 8 equells 25 miles (5 x 5) (5 eights into 40) just reverse for miles to Km. ok

Jan 04, 2012 | Motorcycles

40:1, means 40 parts petrol to 1 part oil.
So it's (1 litre-1000ml) divided by 40= 25 ml of oil.
Even if you had an odd amount of fuel, Say 7.5 litre's-7500ml
7500 divided by 40 = 187.5ml of oil.

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