Mathematics Middle School

When you learned to add decimals, you saw that lining up the decimal point in the addends is really important. Why do you think it is not necessary to line up the decimal points in the two factors when multiplying decimals?

Answer in 2 complete sentences.

Answers

Answer 1

Answer:

It is not necessary to line up decimals while multiplying because you count the decimals instead of bringing them down. Plus lining up decimals while adding can overcomplicate the problem with too many zeros.

Step-by-step explanation:

Related Questions

Cheng-Yu ordered a book that originally cost $24 from an online store. They are having a sale for 15% off all books, what is the cost of the book after the sale?

Answers

answer is $20.4 (filler text)

Emelina wrote the equation of a line in point-slope form as shown below.

(y + 4) = 3 (x + 2)

What is Emelina’s equation in slope-intercept form?

Answers

Answer:

y=3x+2

Step-by-step explanation:

Answer:

i dont know ... sorry dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

I need help on both of them pls help me...

Answers

.8 where cooked by the rooms combined 2) 25% pick blue and red
For question number 3 you would add 24+13+38. And that would give you 75. Making the fraction 75/100, in simplest form it would be 3/4. So the answer for number 3 is 3/4

For number 4: you add 0.5 and 3/10 together, but you can’t add a decimal and a fraction so we will convert the decimal to a fraction, 0.5 is equivalent to 1/2 so we will do 1/2 + 3/10. To add you have to find the most common multiple which would be 10. So now the equation is 5/10 + 3/10. Now all you have to do is add the numerators so 5/10+3/10=8/10. 8/10 in its simplest form is 4/5. Your final answer should be 4/5.

Which of the following is an example of the associative property of multiplication?

7 · (3 · 5) = (7 · 3) · 5
7 · (3 + 5) = 21 + 35
7 · (3 · 5) = 7 · (5 · 3)
7 · 1_7 = 1(that one has a fractien in it i think)

Answers

Answer:

The first and third

Step-by-step explanation:

Help I’m stuck!!!!!!!!!

Answers

0.45 i think just into fractions

2.222... (repeating) gallons

HELPPP ME PLS!!!!!!!!!!!!

Answers

The correct answer is 1/3
1/3 divide it 18/6 is 3 21/7 is 3 24/8 is 3

helpmerightnow...PLEASE

Answers

Answer:

Unit Rate

Step-by-step explanation:

Answer:

Unit Rate

Step-by-step explanation:

my bad i didn't see at first

h e l p !!!!!! D;






will give brainlies t

Answers

Answer:

26.778

Step-by-step explanation:

Answer:21,000

Step-by-step explanation:

Milo can run 9 miles in 60 minutes. He needs to reduce his time by 10%. Approximately how many minutes does he have to take off his time? Round to the nearest whole number.

Answers

Multiply 60 minutes by 10 %

60 x 0.10 = 6

Answer: 6 minutes

the answer is 6 minutes because if you multiply 60 * 0.10 you will get 6 and that’s how much Milo has to reduce in her time

Question # 3
Multiple Choice
Which whole number property is represented?

65 + 0 = 65


Identity Property of Addition
Identity Property of Addition

Associative Property of Addition
Associative Property of Addition

Commutative Property of Addition

Answers

Answer:

5. Commutative Property of Addition

Identity property of Addition

List 5 examples of positive and negative things around us

Answers

The 10 Common Positive Emotions:

Love.Serenity.Forgiveness.Awe.Joy.Interest.Hope.Pride.

Examples of negative thoughts include: All or nothing: “If this date isn't successful, I'll be single forever.” Overgeneralizing: “I've been bad at every single job I've had.” ... Mind reading: “All my friends/co-workers/family think I'm mad

- BRAINLIEST answerer ❤️✌

Negative things around us
- people’s negative thoughts or feeling
- the air quality
- pollution
- toxics in the air
- fires

Positive things
- plants
-animals
-people
- family
- friends

plss help Given the equation :

Part A. Solve the equation 5+x-12=2x-7. In your final answer, be sure to state the solution and include all of your work.

Part B. Use the values x=-0.5,0,1 to prove your solution to the equation 5+x-12=2x-7. In your final answer, include all of your calculations.

Answers

Answer:

   x=0

Step-by-step explanation:

5+x-12=2x-7

-12+5=-7

x-7=2x-7

-x    -x

x-7=-7

+7    +7

x=0

for b substitute the answer in to the equation

x=0 i really hope this helps

what is 7/8 - 2-3 simplified

Answers

5/24

Hope it helps!

Brainliest would be nice since I’m stuck on Ambitious but of course you don’t gotta :)

Answer:

hope this helps :)

Step-by-step explanation:

Exact form: -33/8

Decimal form: -4.125

Mixed number form: -4 1/8

HELPPPPPPPPPP MEH PLZ

Answers

Answer:

24 is the answer.

Step-by-step explanation:

4 + 4 + 4 + 4 + 4 + 4 = 4 x 6

8 + 8 + 8 = 24

24 = 24

Therefore, 6 = 24 ÷ 4

All of them are no, except for 24
36 becomes 9
32 becomes 8
12 becomes 3
but 24 becomes 6

Rinni was able to plant 15 flowers in five minutes. At this rate how many flowers because she plant in 45 minutes ANSWER RATS

Answers

Answer:

The correct answer is 135

Step-by-step explanation:

This is because her rate is 15 flowers per 5 minutes, and there is 45 minutes. Therefore, 5 minutes occurs 9 times in 45 minutes and fifteen flowers times 9 groups of five minutes is 135.

Answer:

135

Step-by-step explanation:

Because if it took 5 mins to plant 15 flowers, you can count how many 5's there are in 45 which there is 9 fives In 45 so, 15x9=135 and therefore she planted 135 flowers in 45 minutes :)

I need help plz!!!!!!!!!!!!

Answers

6)486

7)28.32

8)3.3

9)2.538

10)34.45

11)7.92

12)22.125

13)38.5093

these should all be correct^^!

just type exactly the problem, into a calculator!
good luck on the rest of your assessment.

Solve for the partial product in the algorithm.
Multiply 5 × 35 in the algorithm. Use the area model for help.

Answers

Answer:

175?

Step-by-step explanation:

5 x 35 =

(5 x 30) + (5 x 5) = 150 + 25

175

Zachary purchased a computer for $1,600 on a payment plan. Two months after he purchased the computer, his balance was $1,370. Four months after he purchased the computer, his balance was $1,140. What is an equation that models the balance y after x months?

Answers

Answer:

Step-by-step explanation:

You are finding out each time how much is the items Zachary bought.

Then inputting a equation

$1,600 - ??? = $1,370

To find the unknown number, you must subtract the 2 original numbers.

$1,600 - $1,370 = $230

Computer costs: $230 leaving Zachary with $1,370 left.

Next, it says he purchased another computer...

$1,370 - ??? = $1,140

Again, we subtract the 2 original numbers to find the unknown.

$1,370 - $1,140 = $230 leaving Zachary with  $1,140 left.

Now we input this data into an equation...

y = -230x + 1600.

Use mental math to find the difference.
82-37

Answers

Answer:

45

Step-by-step explanation:

Answer:

45

Step-by-step explanation:

I made the 8 turn into a 7 and made the 2 into a 12 and subtracted 12 - 7 which give you 5 for the right side of the number, then did 7 minus 3 which is 4 for the left side giving you 45

Multiply.

−3⋅7


−21

−11

11

21

Answers

Answer:

-21

Step-by-step explanation:

Since one number is negative and the other is positive, the product is negative and just multiply normally.

-21 because 3x7 is 21 so -3x7 would be -21

Mike jogged a total distance of 5 1/3 miles during the months of October and November. If Mike only jogger 1/6 mile every day, Which expression shows the number of days in which he went jogging?

Answers

Answer:

D

Step-by-step explanation:

If he jogged [tex]x[/tex] miles every day, and he jogged a total distance of [tex]y[/tex] miles, then he runs for [tex]y/x[/tex] days. This is an extension of the [tex]d=rt[/tex] or distance equals rate times time.

We plug in for y and x to get that he runs for [tex]5~1/3~~/~~1/6[/tex].

So, the answer is [tex]\boxed{D}[/tex] and we're done!

Answer:

d

im always right

Please need help! 10 points!!

Answers

Answer:

I cant see that.

Step-by-step explanation:

c&d are the correct answers

HELP ME PLS AND I ALSO NEED TO SHOW WORK :((((

Answers

Answer:

12+4=16 so 20=16+4 or 12+4=16 so 16+4=20

Step-by-step explanation:

Answer:

4 is 20% of 20

4 is 25% of 16

please help 40 POINTS

Answers

Answer:

2 2/3 bottles of soda

Step-by-step explanation:

(2/9)*12=

24/9=

2 6/9=

2 2/3

The first and second box choice's are Robert and Eileen.


And the Last box the answer choice's are 1.3, 2.7, 8.2, 28.9

Answers

Answer:

Robert bikes faster than Eileen by 1.3 mi/h

Step-by-step explanation:

first we have to find the mph rate

Robert: 9.5

Eileen: 8.2

Gabriella was out at a restaurant for dinner when the bill came. She wanted to leave a tip of 24%. What number should she multiply the cost of the meal by to find the total plus tip in one step?

Answers

Answer: 0.24

Step-by-step explanation:

You have to multiply the percent by its decimal form and then you multiply the decimal by the cost of the meal

The correct answer is 0.24

can some one help me?

Answers

Answer:

Im pretty sure it's 3/8

HOPE THIS HELPS YOU!!!

Help. Me. Please. I don't understand it!! Asap please!

Answers

Answer:

He has 286 dollars in his bank account at the end of the month.

Step-by-step explanation:

Deposit Meaning- basically to add

Withdrawal- basically to subtract

154+237+45= 436

-125-25= -150

436-150= 286

I think the last answer is wrong. No offense. If he starts with $154 and I deposited 237 bring it Up to 391 then he withdraws $25 so you subtract that and you get 366 then he withdraws another 125 bringing it down to 241 then he deposits $45 bringing him up to 286. 286 is your answer and make sure you put dollars as the unit. Hope this helps!

Person A spends $9.80 on gas. The car drives 27 miles per gallon and the driver drives 135 miles.

Person B's car gets 29 miles per gallon and spends $14.28 on gas to drive 203 miles.

If person A spends $13.72 on gas at the same rate, and person B spends $16.32 on gas, what is the difference in the amount of miles the cars can travel before running out of gas?

Answers

I think the answer is $72.52

Car B can drive 43 more miles than car A before running out of gas

Car A= $1.96 per gallon
Car B= $2.04 per gallon

Car A- 7 gal. x 27 mi./gal= 189 mi.
Car B- 8 gal. X 29 mi./gal= 232 mi.

232-189= 43

If Joe wants to purchase a ball that costs $15 and has a 15% off discount, how much does Joe have to pay
Please explain with proof

Answers

You will pay $12.75
(The easiest way of calculating discount is, in this case, to multiply the normal price $15 by 15 then divide it by one hundred. So, the discount is equal to $2.25. To calculate the sales price, simply deduct the discount of $2.25 from the original price $15 then get $12.75 as the sales price.)

Answer:

You will pay $12.75

Step-by-step explanation:

Other Questions
2. Ito ay ginagawa sa pamamagitan ng mga patpat na inaayosat itinatali upang makabuo ng isang balangkas ng bituin o ibapang hugis.a. Parolc. Papier Macheb. Pambalaot sa Pastillas d. Taka3. Isang matamis na kendi na gawa sa pinaghalong gatas atasukal na may kasamang pampalasa at pangkulay.a. Parolc. Papier Macheb. Pambalaot sa Pastillas d. Takang mgwika aalikas4. Ito'y isang uri ng katutubong sining na kung saan ginaganang mga papel upang makabuo ng isang magandanglaruan, mga palamuti sa tahanan, mapa at iba pa.a. Parolc. Papier Macheb. Pambalaot sa Pastillas d. Takaadjao.5. Ang mga katutubong sining na gawa sa papel ay ang kikitataka, parol, pambalot sa pastillas at papier mache ay tinatarnaa sining sa bakalc. sining sa Kristalsa balat ng puno d. sining sa papel HELP PLS I NEED IT RNYou are given a compound that has a melting point of 560 C. You dissolve some of the compound in water and measure the pH of the resulting solution to be 11. You are told that the compound is either KCl, Ca(OH), CHO, or HSO. Which of these compounds where you give? Explain. please help with this will give brainiest 2 best answerWhich of the 3 main colonial region had the fewest loyalists. Answer the question dddddddddddd What equation do you use to find the slope of a line? I believe it is y=mx+b but I forgot..... I need help please there are three more questions after that and they are 7/10+2/5+3/4NUMBER 2: 3/4+7/8+5/6 NUMBER 3: 3/5+7/8+3/10 Tina babysits children in her neighborhood. When Tina is asked her rate, she tells her neighbors that she charges $15 for the first hour and $8 for each hour after. If Tina's neighbor asks Tina to babysits for 4 hours, how much will Tina earn? Write an equation to model and solve the problem. Write the answer as an ordered pair and explain the meaning of the ordered pair. Shane wants to plant 28 marigold plants and 36 rose plants in his garden. What is the greatest number of rows possible if each row has the same number of marigold plants and the same number of rose plants. Pls also put this in a graph Is (2,3), a solution to the system of equation x2 + y2 = 13 and 2x - y=4?TrueFalse Why does D-503 consider life in the previous society to have been"actually wholesale murder" (Paragraph 20)? Cite evidence in youranswer. is this correct, please help me Solve:e + 13.2 = 289.47 In cell A, what structure is labeled X? What is the value of f(x) = 5x +1 at f(-4) ? The problem 7212 will have a quotient greater than the problem 7.212.true or false HELLLLLP QUICK How did William Henry Perkins work with carcinogens (cancer-causing chemicals) help make textile production more profitable? I need help with factoring trinomals. Please explain how you got the answer. if you are an endurance athlete, you especially rely on which type of skeletal muscle fiber to perform your sport? which of the following are examples of single replacement reactions select all that apply. 1) Ca(OH)2(aq) + 2 HCl(aq) ----> CaCl2(aq) + 2 H2O(l) 2)Mg(s) + Zn(NO3)2(aq) ------> Mg(NO3)2(aq) + Zn(s) 3)Na2S(aq) + Cd(NO3)2(aq) ----> 2 NaNO3(aq) 4) K(s) + 2HCl(aq) ----> 2KCl (aq) +H2(g)