Estimating percentages by Tanya Gaddis

Eliana Alvarado example #1: use mental math when you go shopping for clothes ,you estimate how much you would spend

2018-09-21 16:26:53 UTC

example #2 : you can also use mental math to see if an item is a certain percent discounted from the original price , you can be able to estimate the new price.

2018-09-21 16:27:07 UTC

we need it to make sure we are getting the correct amount of change

example: when comparing prices monthly to see what is cheaper after a year.

2018-09-21 16:29:07 UTC

Saul

Destiny Gomez

2018-09-21 16:29:35 UTC

*When you have to give a customer change.( Mentally Subtracting)
*Splitting A bill with Friends. (Mentally Dividing)

Nathalie Medina

2018-09-21 16:30:02 UTC

You use mental math when you need change. For example You have a 20 dollar bill and you want to change it for smaller bills. Another example would be estimating 50 percent off some 100 dollar shoes.

Sandra Gonzalez

2018-09-21 16:30:23 UTC

so you can compare the prices.

Luis Gutierrez

2018-09-21 16:30:27 UTC

when you go shopping

Evelyn Gomez

2018-09-21 16:30:40 UTC

When you go to a store and see a 10% off sign, you have to be able to make sure that they charge you the right amount and give you the right amount of change back.
#2 And when you leave a tip for your server at a restaurant, you need to know how much you are giving them.

Aja Jones

2018-09-21 16:30:49 UTC

you use mental math when buying clothes at the store when trying to get the most items for a good price. another example is using coupons on groceries.

2018-09-21 16:32:25 UTC

Example 1: Estimating ingredient for a recipe using your mental math of what you know and estimating how much you need to mke the best guess

Example 2: Trying to catch a sale at the mall so your checking the sale percentage from what you know.

Alton G.

2018-09-21 16:32:35 UTC

When you go to the store to buy a chocolate bar and it is 20% off, you compare how much money you have to how much the bar is worth along with its reduced price.

Michelle Martinez

2018-09-21 16:32:39 UTC

you need to be able to do mental math to know you're getting the right amount of change and know if you are paying the right amount of money taken off when you're buying something that's on sale

Abraham Munoz

2018-09-21 16:32:42 UTC

If you have 100, 10/100 is 10% so you just use mental math to calculate a percentage like if you have 200 10% of 200 is twenty percent.

Luis Perez

2018-09-21 16:32:43 UTC

You use mental math when you wanna pay your bills off.

Isaac meraz

2018-09-21 16:33:55 UTC

Being able to do the mental math at the grocery store or any store to get stuff for a good price

Andrea

2018-09-21 16:35:36 UTC

When you're shopping and you see discounts .
When companies describe the increase or decrease of their profit levels.

omar

2018-09-21 16:36:41 UTC

when black Friday comes around

2018-09-21 16:37:51 UTC

so you can compare t

2018-09-21 16:39:03 UTC

Azly Gonzalez

2018-09-21 16:40:52 UTC

you use mental math when you count and add the hours you worked for the week

Hiram Jordan

2018-09-21 16:41:28 UTC

you use mental math when u go to the grocery store or when you're shopping at the mall u have to use addition subtraction and division when something is like 10 percent off.you also have to round an estimate on how much u are spending

Alex

2018-09-21 16:43:11 UTC

when theres a discount on shoes

Angela Carranza Garay

gp7552561 — 2018-09-21 17:08:35 UTC

Mental math help in many situations. For example we mentally add the cost of two items to determine the total amount we owe.

when you shop

2018-09-21 17:31:02 UTC

2018-09-21 17:38:36 UTC

2018-09-21 17:39:26 UTC

Saul Marquez

Angela Charqueno

2018-09-21 18:31:25 UTC

Mental math is doing quick but not exact math . It may help in many situations ,for example you do a job and 40% of the profit made is yours you want to know how much you are getting , lets say they got paid 1000 so you convert the percent in a decimal times the amount and that is the percent of the total 40= .40% *1000 = 400 so 400 dollars is your pay easy to do mentaly . another example you go to a restorant and they charge 15% of the check fot the waitress or waiters tip . so you pay 38 we round it to 40 and want to now how much will they charge of tips , so we convert the percent in to a decimal then times it by the total 15%+.15 * 40 =it is 6 dollar so it will be 40 =6 dollar of tips your total will be 46 dollars quick to do i the mind

Hector Mederes

2018-09-21 18:31:41 UTC

You can find mental math very helpful when you go to the mall or when you go for example when there is a discount of 20%off an item that cost 100$the item now cost 80$

Karla Gonzalez

2018-09-21 18:33:09 UTC

You can use mental math when you go to the mall and estimate the discount off from the jacket.

Also, you can estimate how much your interest is when paying for your credit card.

Roxanne M-Pena

2018-09-21 18:34:41 UTC

Mental Math can be used when at a grocery store when they have sells/discounts so you know your price at the end and will be able to make sure you know its correct.

Sandra Juarez

2018-09-21 18:36:27 UTC

One way to use mental math would be when figuring out the discount prices in a store. Another way to use mental math would be when splitting a bill with friends.

Deibinson Sauceda Castillo

2018-09-21 18:37:29 UTC

the mental calculation helps us to do many tasks as example, some account that we want to do in the work in a store etc.

Karla Santos

2018-09-21 18:37:35 UTC

Mental math helps us students to develop raliable and effecient methods to develop codable methods such as multilplying or dividing in some situation in a store or work.

Ricardo Garcia

2018-09-21 18:38:10 UTC

One example can be discounts at a clothing store, such as 10% off an item and making the mental math in your head.
Another example could be leaving a tip for a waiter/waitress. You need to be able to calculate how much your giving him/her.

Jesus Arredondo

2018-09-21 18:38:52 UTC

one way mental math can be used in a real life problem is at the grocery store when you looking for discounts. Another example would be when your mom is saving coupons and decide's to use them you can see hoe much that coupon is taking off the original price.

Brandon Martinez

2018-09-21 18:39:18 UTC

$100 shoes with 50% discount= $50

Jose Juarez

2018-09-21 18:39:23 UTC

you can use the math when you measure your time. another example is when you manage your salary .

David De La Sancha

2018-09-21 18:39:33 UTC

1.A example of mental math can be a discount at a shoe store when they have it at 10% off.
2.Another example is when you buy things by coupons.

Caylee Gonzalez

2018-09-21 18:39:44 UTC

ex.1 One way you can use mental math is if you get a job as a cashier and you can learn how to ring someone up properly.
ex.2 If you are at a store and need to see how much off a shirt is

Josh martinez

2018-09-21 18:39:49 UTC

Do math when you see discount cost less also help count.

Christian Lozano

2018-09-21 18:41:56 UTC

1. Mental math can be use when calculating the percentage of a discount.
2. Another way to use mental math is when you have a coupon.

Addie Nieto

2018-09-21 18:44:32 UTC

1) It can help if you ever need to find our how much a sale is worth
2) To do your own taxes

Emily Martinez

2018-09-21 18:49:48 UTC

1) It can help you estimate the cost of items
2) It can help you answer numerical questions faster

Paola Perez

2018-09-21 18:50:16 UTC

#1; mental math can be used to multiply two digit numbers mentally.
#2; mental math can also be used for real life problems, like when going shopping and calculating the prices for items.

Dazia And Kenchesia

2018-09-21 18:51:47 UTC

1.You can use mental math to see how much you pay instead of someone trying to take your money.
2.

Dazia Velasquez

2018-09-21 18:52:34 UTC

Karla Gonzalez

2018-09-21 18:53:54 UTC

1) to figure out the discount off from your favorite jacket
2) to figure out how much you pay for interest in credit card

eyan means

2018-09-21 18:54:52 UTC

you can use mental math when you go to footlocker and get these shoes on discount for 30 percent from the original price

2018-09-21 18:57:10 UTC

Ricardo Garcia

2018-09-21 18:58:39 UTC

2018-09-21 19:00:28 UTC

1; mental math can be used to multiply two digit numbers mental

2018-09-21 19:00:34 UTC

1; mental math can be used to multiply two digit numbers mental