mental math again 60x40x2

Answers

Answer 1

Answer:

the answer is 4800

Answer 2

Answer:

What is mental math?

Mental math is definitely what it sounds like—doing math in your head. But it’s also more nuanced than that. Being good at mental math tricks doesn’t mean that you’re able to solve 8974387 x 396 in your head instantly; while cool, that wouldn’t be very practical for daily life. So what does mental math mean?

It really just means being able to calculate in your head. It doesn’t mean you can solve every type of problem every time, nor is it a skill that you either “have” or “don’t have”; it’s a skill that you can learn, practice, and improve so that you can solve a bigger range of problems. And mental math certainly doesn’t have to be entirely in your head, either. Jotting down the numbers you need to remember to give you a head start (no pun intended), or writing down your solutions at each “step,” does not negate the “mental”-ness of the math.

Is mental math useful?

Ask this question again next time you’re trying to figure out a tip or doing any kind of construction or home improvement project! And, in addition to handy practical uses, knowing how to do mental math can also just keep your brain sharp and curb your reliance on calculators. Because, come on, doesn’t it feel good to reach for a calculator only to realize, “Wait, I don’t need it!” and figure out the answer in your head? (Spoiler: It does!) Not to mention knowing how to mentally solve small, simple math problems can save you some steps and help you out if you do need to solve a more complicated, difficult problem. There are always going to be some math problems that it would be silly to not solve with a calculator, but, yes, mental math is useful. And if you’re wondering if math itself is useful, math lessons you’ll actually use in real life.

Step-by-step explanation:


Related Questions

Salena needs to purchase 9 skirts for a new job. her friend, Jamie goes with her each of the skirts costs $41. Salena says that she can find the total cost by multiplying 9 and 4 and adding that to product of 9 and 1. Jamie disagrees and says that she needs to find the product of 9 and 40 and add that to the product of 9 and 1. Who is correct and why?

Answers

Answer:

Jamie is correct. This is because 41 is a combination of 40 and 1. Salena thinks that the 4 is just a 4, however, the 4 is in the tens place, so the 41 without the 1 is 40. The answer to this 41 times 9 is 369. Not 45.

Step-by-step explanation:

Each skirt is $41

Salena needs 9

(9*40) + (9*1)

360   +   9

    $369

BI
Challenge 2
A: Can you find the
area of the circle?
r=x +1
B: Can you find the
circumference of
the circle?

Answers

Answer:

Area of the circle = pi * r^2 = pi * (x+1) ^ 2

Circumference of the circle = 2* pi * r = 2*pi*(x+1)

(-8) X 2/3 i NEED the answer help me

Answers

-5.33333333333

I used a calulator can I get brainliest please

Select all the expressions that are rational numbers.
a. 3.14159…
b. –9.1234567123…
c. –9.293847210103938…
d. 227
e. –26

Answers

Answer:

d,e

Step-by-step explanation:

rational numbers are positive and negative whole numbers.

Answer:

d,e

Step-by-step explanation:

Other Questions
What is the capital of N. Ireland? A deposit of $10,000 is made a year from now, a second deposit of $10,000 is made at the end of the year 5, and a deposit of $3000 is made at the end of year 8. The account earns 6% interest. You want to withdraw an equal amount, X at the end of each year for the next 10 years. What is the amount of X if the goal is to empty the account Enter the correct answer in the box by replacing the values of m and b. A 5000 seat theater has tickets for sale at 26 and 40. How many tickets should be sold at each price for a sellout performance to generate a total revenue of 153800. A 20 gallon tank is full. How many gallons are in the tank? What are the major characteristics thatdistinguish the Woodland Indians from theirpredecessors? where was lencho ' s house situated CAM charges for retail leases in a shopping mall must be calculated. The retail mall consists of a total area of 2.8 million square feet, of which 800,000 square feet has been leased to anchor tenants that have agreed to pay $2 per rentable square foot in CAM charges. In-line tenants occupy 1.3 million square feet, and the remainder is a common area, which the landlord believeswill require $8 per square foot to maintain and operate each year. If the owner is to cover total CAM charges, how much will in-line tenants have to pay per square foot? Aquanauts explore the area called? PLZ HELP MEIn 2001, gold was priced at (0.5x + 300) dollars per ounce. Its price tripled in 2008 and then doubled in 2011. In 2016, its price dropped to 2 3 of the price in 2011. Write an expression for the price of gold per ounce in 2016. Explain how you found the expression. Which shows another way to write 9.54?O 0.5 + 0.04O 9+ 0.4 + 0.05O (9 * 1) + (5 x 0.1) + (4 x 0.01)O (9 x 0.1) + (5 x 0.01) + (4 x 0.001) Jayvon has 33.6 points in a competition. He loses 5.5 points,Write and then evaluate an addition expression to determine Jayvon's current points. 600 students are studying in a privateschool, the average monthly fee of astudent is Rs. 1200. How much amount fortax does the school pay to the governmentas education service tax at the rate of 1% ina year? * Compare: -7 -4PLEASE HELP ME! 12. A worker can pack 72 boxes of oranges in 2 hours. At this rate, how many boxes of oranges can she packin 8 hours? Which narrative point of view is used in this excerpt from The Lilys Quest by Nathaniel Hawthorne?So one breezy and cloudless afternoon Adam Forrester and Lilias Fay set out upon a ramble over the wide estate which they were to possess together, seeking a proper site for their temple of happiness. They were themselves a fair and happy spectacle, fit priest and priestess for such a shrine, although, making poetry of the pretty name of Lilias, Adam Forrester was wont to call her "Lily" because her form was as fragile and her cheek almost as pale. As they passed hand in hand down the avenue of drooping elms that led from the portal of Lilias Fay's paternal mansion they seemed to glance like winged creatures through the strips of sunshine, and to scatter brightness where the deep shadows fell. Anand needs to hire a plumber. He's considering a plumber that charges an initial fee of \$65$65dollar sign, 65 along with an hourly rate of \$28$28dollar sign, 28. The plumber only charges for a whole number of hours. Anand would like to spend no more than \$250$250dollar sign, 250, and he wonders how many hours of work he can afford. Let HHH represent the whole number of hours that the plumber works. Which of the following was the African American killed in the Boston Massacre?(5 points)Samuel AdamsCrispus AttucksPaul RevereJohn Adams It cost Samantha $4.23 to send 47 text messages. How much does each text cost to send? More on Linear Equations & Linear Systems: Question 1How many solutions does the system of equations belowhave?y - 2x + 2y-r-1Select one:noneinfinitely manyO o o oonetwo