How can you use mental math to multiply numbers by 10?

Answers

Answer 1

Answer:

add a zero at the end of the number. 5x10=50. 60x10=600. 700x10=7000 etc.

Step-by-step explanation:

Answer 2

Answer:

Move the decimal point one space to the right

Step-by-step explanation:

Ex:

12*10=120            12=12.0 move the decimal one space to the right=120

You can also just add 0 if there isn't a decimal point

13.5*10=135                        move the decimal one space to the right

hope this helps :)


Related Questions

Which functions is nonlinear

Answers

Answer:

the 3rd one

Step-by-step explanation:

Answer:

last one

Step-by-step explanation:

i just need to know what the answer is pls help!! ty!!

Answers

Answer:

Tangent is the answer.

Hope it helps!!!

The volume of a sphere is 267.95 m2. To the nearest meter, what is the radius of the sphere? Use
3.14 for .
I need this answer ASAP!

Answers

Answer:

4m

Step-by-step explanation:

v=4/3 pi r^3substitute 267.95=4/3×3.14×r^3267.95= 12.56r^3/3multiply by the reciprocal on both sides 64=r^3find the cuberoot on both sides to remove the cube hence 4=r

Twice the sum of a number and -6 equals -6 times the sum of the number and 4. Let n stand for the number. Solve for n.

Answers

Answer:

n = -18/7

Step-by-step explanation:

Represent the number with n.

Then:

n - 6 = -6(n + 4)

Performing the indicated multiplication, we get:

n - 6 = -6n - 24

Combining like terms results in 7n = -18, so n = -18/7

What is this students GPA? Class Grade English B Math A Science B Social Studies C Physical Education Spanish Art A. 2.71 B. 3.3 C. 2.0 D. 4.0​

Answers

Answer:

3

Step-by-step explanation:

Finding a GPA is just like finding an average, you add up all of the different outcomes and divide it by the total amount of outcomes and you will get the average. You also need to know how many points each letter grade is worth. It is normally A=4.0 B=3.0 C=2.0 D=1.0 and F=0. In this case here is what you will add,

3+4+3+2=12

Now that you have the total number of points you need to divide the total by the total outcomes which would be,

12/4=3

3 is the final answer

Have a conversation :>

yep c:

Answers

Answer:

Yep......a lot of notifications on my phone.....lol

thx for points!

Follow me! :)

"What is the GCF (greatest common factor) of 60x^3- 10x^2+ 30x?

Answers

Answer:

10x

Step-by-step explanation:

Given the expression 60x^3- 10x^2+ 30x, we are to find the GCF

First let us find the factors of each terms

60x³ = 6 * (10 * x) * x²

10x² = 1 * (10 * x) * x

30x = 3 * (10 * x)

From the three factors, you can see that 10*x is common to them all. Hence the GCF of the expression will be 10x

I need this done please

Answers

Answer:

Step-by-step explanation:

The answer is 19

HELPPPPPPPPPPPPPP MEHHHHHHHHHHHH I HAVE A D+ AND GRADE GO OUT THIS FRIDAY PLZZZZZZZZZZZZZZZZ HELPPPPPPPPPPPPPPPP

Answers

Answer:

Step-by-step explanation:

Clusters:

There is a cluster with a regression line of -0.4

Outliers:

(8,8) because it is not near the cluster that was said earlier.

the difference of two number is 28 if the larger number is three time of the smaller find the number​

Answers

Set up an equation:

3x - x = 28

Simplify:

2x = 28

Divide both sides by 2

X = 14

3(14) = 42

The numbers are 42 and 14

Which statement explains why 49 is a perfect square

Answers

Answer:

49 is equal to 7 times 7

Step-by-step explanation:

perfect squares are a number that are the product of the same number e.g. 4*4=16, 5*5=25

everyone attending a football game are asked what their favorite sport is bias or unbiased

Answers

Answer:

Biased

Step-by-step explanation:

Hi there,

Since people at a football game are asked what their favorite sport is, it is more than likely that it would be football since they attend a game they are interested in. In other words, it is usually given that people at a football game like football. Therefore, the responses would be biased.

Hope this explanation helps.

Cheers.

i need help on thissssssssss

Answers

Answer:

s2Wzwxr tcyvybubububyxrz

What is the axis of symmetry of the parabola? 12(x+3)= (y–2)2a)

Answers

Answer:

a (y - 2)/6-3 is the answer

hope this helped

2 (3)^3 + 5

And explain how you got it

Answers

Answer:

59

Step-by-step explanation:

3^3=27

2x27=54

27+54+5=59

Answer:

2 times 3 i 6 o 3 plus 5 equal 8

Step-by-step explanation:

beca you supoed to multiply ad divide

if S is midpoint of GA, then?

Answers

that means S is in the middle between G and A

[tex]s \: = \: \frac{g + a}{2} [/tex]

Solve ? I need your helpppppp

Answers

Answer:

square = 8

triangle = 3

circle = 2

Step-by-step explanation:

triangle + triangle = 6, one triangle = 3

triangle + circle = 5, circle = 5 - 3 = 2

square + circle = 10, square = 8

The number of households without a computer at home in 2009 was closest to A)801000 B)1153000 C)1737000 D)3433000 E)4017000

Answers

Answer:

B) 1153000

Step-by-step explanation:

Given

See attachment

Required

Number of households without computer in 2009

From the attachment, we have:

[tex]n=5170000[/tex] --- survey

[tex]p = 22.3\%[/tex] --- proportion without computer

So, the actual number is:

[tex]Number = p * n[/tex]

[tex]Number = 22.3\% * 5170000[/tex]

[tex]Number = 1152910[/tex]

[tex]Number \approx 1153000[/tex]

Hence: (B) is correct

HELP ASAP PLEASE.



a) according to the map on the left, Central Park is about 50 blocks long by 9 blocks wide. what is the approximate area of the park? show your work.




b)lets say the area of the map is 21 square inches. you want to make q enlarged map of central park to take with you on your journey. describe how you can determine the area of the the enlarged map.




c)supposed the scale factor you will ise to enlarge the map is 5:1. what is the approximate area of the park of the park in your enlarged drawing.




d) how did you apply proportional reasoning as you worked through these problems?

Answers

it is either the second one or the last one

Answer:

For (a) the answer is 450, 50(9)=450 total blocks.

Step-by-step explanation:

For (c), you will have to use a scale of 1 to 5, so, 450(5)=2,250.

For (b), if the map is 21 square inches and you want to enlarge it to the size you want, you would have to take the total value of the original map and multiply it by whatever factor it has to be multiplied by.

Now finally for (d), I applied proportional reasoning by looking at the dimensions and adding them all together to get the area value, then comparing the area value to the enlarged figure or decreased figure.

(I did this quite a long while ago, I'm going based on my memory and math skills, sorry if I failed horrendously.)

Easy points!!!
Adam writes a number. The number is
greater than 50 and less than 54.
What numbers could Adam have
written? Explain.

Answers

Answer:

51, 52, 53

Step-by-step explanation:

51, 52, and 53 are all greater than 50, but less than 54

The possible numbers that Adam could have written are any number between 50 and 54, such as 51, 52, or 53.

What is the number system?

Number systems are mathematical systems that are used to express numbers in various ways.

Given that the number is "greater than 50 and less than 54", which means it must be strictly between those two values.

Here, the range of numbers that Adam could have written is (50, 54), which means any number greater than 50 and less than 54, but not including 50 and 54 themselves.

Thus, the possible numbers that Adam could have written are any number between 50 and 54, such as 51, 52, or 53.

Learn more about the number system here:

https://brainly.com/question/11690474

#SPJ2

Clare buys with a normal price of $24 but saves 6$ by using cupons. For what percentage off is this cupon?

Answers

Answer:

25% off.

Step-by-step explanation:

Here is a link that can help you in the future.

https://www.calculators.org/math/percentage.php

If X/2 - 1=X/3 + 4, then x=?

Answers

Answer:

X - 1 = X + 4

2 3

X- 2 = X + 12

2 3

3(x - 2) = 2(x + 12)

3x - 6 = 2x + 24

X = 18

According to Thomson Financial, last year the majority of companies reporting profits had beaten estimates. A sample of 162 companies showed that 98 beat estimates, 29 matched estimates, and 35 fell short. (a) What is the point estimate of the proportion that fell short of estimates

If required, round your answer to four decimal places. pshort = (b) Determine the margin of error and provide a 95% confidence interval for the proportion that beat estimates. If required, round your answer to four decimal places. ME = (c) How large a sample is needed if the desired margin of error is 0.05?

Answers

(8xd) or ur ganna be (78b)

due in 10 mins, pls help !​

Answers

Answer:

3rd one

Step-by-step explanation:

Find the simple interest. Round to the nearest
cent if necessary.
$1450, 32%, 3 months

Answers

Answer: $116

Step-by-step explanation:

Simple interest is calculated using the formula = PRT

where,

P = principal = $1450

R = rate = 32%

T = time = 3 months = 3/12 = 1/4 = 0.25

Interest = PRT

= 1450 × 32% × 0.25

= 1450 × 0.32 × 0.25

= $116

The simple interest is $116

Can someone please help me in math?

Answers

Answer:

yes

Step-by-step explanation:

What you don't know. which chapter is hard for you?

I need help with solving this question with the elimination method since my teacher didn’t explain lol

I also need to state if it has one solution, infinite solutions or no solution

Answers

Answer:

*itccyohchcuvojvibbib

there u go :)

A store is instructed by corporate to put the markup of 43% on all items. An item costing 7$ is displayed by the manager at selling price of 3$ . Notice that the selling price is wrong . Find the correct selling price . What is the managers error?

Answers

Answer:

Selling rice is $10.00

Step-by-step explanation:

The manager put what the markup of $3.00 was to be added onto what the item cost.

help fasttttt please and no file please

Answers

Answer:

2 is the answer.

Hope it helps !!!

Answer:

x=2

Step-by-step explanation:

5x+2y = 16

8y = -x+26

5x+2y = 16

8y+x= 26

-19x = -38

x=2

Can someone pleas help ?

Answers

Answer:

y=12

Step-by-step explanation:

BA/BD=BE/BC

24/8=(24+y) / y

16y=192

y=12

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