Multiplication Division
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Multiplication Division
Grocery Store Multiplication
Complex and simple everyday applications use multiplication to complete specific tasks.
One everyday activity, such as grocery shopping, provides a great way to see how multiplication is used in a practical manner.
For example, if two oranges for each day of the week were on the shopper's list, a quick bit of factoring would resolve the question of how many oranges to buy; 7x2=14, fourteen oranges would need to be purchased.
Next, the cost of the fourteen oranges is determined by multiplying the weight times a cost per pound.
The cost of the oranges is fifty cents per pound and the oranges weigh four pounds, so 4x.50=2 shows the oranges will cost two dollars total.
Next on the shopping list is a loaf of bread, and this item is advertised as on sale for twenty percent off the original price.
The bread was originally $4.00 and to figure the new cost, a little multiplication comes in handy, 4x20% or 4x.20=.80, resulting in a sale price of $3.20 (4-.80=3.20).
The grocery trip ends for a shopper at the checkout, where multiplication is used to factor how much sales tax is owed for all the items purchased.
To determine the true total of the grocery store purchases, the shopper would need to use multiplication to factor the total groceries times the sales tax; if sales tax is 8% and the groceries total $25.00, then 25x8% or 25x.08=2, determines the total cost of groceries as $27.00.
Multiplication helps the grocery store clerk quickly ring in more than one of the same item.
Instead of ringing in each item separately, a clerk can use multiplication to determine the total price, such as three bars of soap at $2.00 would cost $6.00, 3x2=6.
Multiplication is also used at the grocery store when the manager creates a shift schedule.
Sundays afternoon is the busiest shopping time of the week and the store manager knows that each register will need to be staffed, as well as assigning a separate bagger to each cashier.
Multiplication will determine that the schedule should have twenty-four people working on Sunday afternoon to cover the twelve checkout lanes in the store, 2x12=24.
The grocery store manager also ran a sale on Sunday, and would like to determine the percentage of revenue collected from the sale product.
The manager counted $8000 of total revenue and noted from the receipts that $1500 came from the product on sale; a bit of division and multiplication will show the total percentage of revenue from the sale: 1500/8000=.1875 or 18.75% and to check the work, 8000.00x18.75% is 1500.
The manager can then determine if 18.75% is a targeted goal for the sale and will be able to make an educated decision about whether or not a similar sale should be run again.
From the management, to cashier, to customer, grocery stores provide an excellent opportunity to use multiplication skills.
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How solve linear equations using multiplication and division?
I need help solving linear equations using multiplication and division? Here are some Q's that i have on my algebra book that i need to do? Also please try to write the algorithm and explain how you did it.
I need help solving linear equations using multiplication and division? Here are some Q's that i have on my algebra book that i need to do? Also please try to write the algorithm and explain how you did it.
1)7y=-6
2)-4n=24
3)10x=110
4)-10x=-9
Your goal is to get the variable by itself. In example one the variable is y, 7y=-6. You can achieve this by dividing both sides by 7. You get (7y)/7=-6/7 The two sevens on the left cancel out equaling 1,and you get y=-6/7.
On two, -4n=24, the variable is n. You need to remove the -4, so you divide both sides by -4. (-4n)/-4=24/-4. the -4's on the left cancel out equaling 1, and 24/-4=-6, so you get n=-6
To do a fraction e.g. p/4=2, you would think about it as (1/4)p=2 and divide both sides by 1/4. ((1/4)p)/(1/4)=2/(1/4) to divide by a fraction you find the inverse and multiply, so you get (4/1)(1/4)p=2(4/1). The (4/1)(1/4) cancel out equaling 1, and on the right you get 8/1. p=8
Multiplication and Division of Power Series