1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Xelga [282]
3 years ago
13

Multiply and Divide Whole Numbers explain what to do and how to do it

Mathematics
2 answers:
rodikova [14]3 years ago
8 0
Multiplication is a simple way of adding
For example 6x8 is the same as 8+8+8+8+8+8

Any number multiplied by 1 is itself E.g 4x1 = 4

Multiplying by 2 is just doubling

Multiplying by 10 is adding a 0 to the original number

If it is a big number that you do not know how to multiply mentally split it up
E.g 17x13
Split 13 into 10 and 3
17x10= 170
17x3= 51
Then add these numbers
221

If you ever get stuck, use the long method, add them instead, you will get to the right answer but it will take longer

Dividing is not as simple
Like multiplication dividing by one will leave you with the same answer

Dividing by two means you half the number, which may give you a decimal

Bigger numbers are trickier, and you may be allowed to use a calculator for numbers
Below are a number of links, these websites will teach you how to improve your multiplication and division skills:

http://www.bbc.co.uk/schools/gcsebitesize/maths/number/decimalsrev3.shtml

https://m.youtube.com/watch?v=XiXeu9FxAcQ

https://www.tutorialspoint.com/multiply_and_divide_whole_numbers/multiplication_as_repeated_addition.htm


alexandr402 [8]3 years ago
4 0
Multiplication:
It is like addition. For example, 1+1+1+1 is the same thing as 1 x 4, but multiplying is faster.

Division: 
It is the opposite of multiplication. For example, 12/4=__. All you need to know is what times 4 equals 12, and the answer to that is 3. So the answer is 3.
You might be interested in
Joe's pizza shack sell $5 pizza. If Joe raises the price by 20% , what is the amount of the mark-up?
skelet666 [1.2K]

Answer:6 dollars

Step-by-step explanation:5 +20% gives you 6 which would be the ending price

4 0
2 years ago
Read 2 more answers
Find the slope of the line.
pickupchik [31]
There are several ways to do this.
I'll show you two methods.

1) Pick two points on the line and use the slope formula.
Look for two points that are easy to read. It is best if the points are on grid line intersections. For example, you can see points (-4, -1) and (0, -2) are easy to read.
Now we use the slope formula.

slope = m = (y2 - y1)/(x2 - x1)

Call one point (x1, y1), and call the other point (x2, y2).
Plug in the x1, x2, y1, y2 values in the formula and simplify the fraction.

Let's call point (-4, -1) point (x1, y1).
Then x1 = -4, and y1 = -1.
Let's call point (0, -2) point (x2, y2).
Then x2 = 0, and y2 = -2.

Plug in values into the formula:

m = (y2 - y1)/(x2 - x1) = (-2 - (-1))/(0 - (-4)) = (-2 + 1)/(0 + 4) = -1/4

The slope is -1/4

2) Pick two points on the graph and use rise over run.
The slope is equal to the rise divided by the run.
Run is how much you go up or down.
Rise is how much you go right or left.

Pick two easy to read points.
We can use the same points we used above, (-4, -1) and (-0, -2).
Start at point (0, -2).
How far up or down do you need to go to get to point (-4, -1)?
Answer: 1 unit up, or +1.
The rise is +1.
Now that we went up 1, how far do you go left or right top go to point (-4, -1)?
Answer: 4 units to the left. Going left is negative, so the run is -4.
Slope = rise/run = +1/-4 = -1/4

As you can see we got the same slope using both methods.
6 0
3 years ago
39x38 multiply using partial prodcuts
yKpoI14uk [10]
39 x 10
= 390

39 x 40 (390 x 4)
= 1,560

39 x 2
= 78

1,560 - 78
= 1,482

ANSWER: 1,482
4 0
3 years ago
John mows lawns. He can mow 7 lawns in 5 hours. At this rate, how long would it
sweet [91]
It will take him 30 hours
4 0
3 years ago
2. A soccer field is bordered on three sides by a parking lot of width x. The total
notsponge [240]

Answer: 50m

Step-by-step explanation:

this is the logical way I solved it:

1. Find the area of the entire area thing

300*200=60000

2. Subtract the area of the field from the area of the entire place

60000-30000=30000

3. Divide the area of the parking by three because there are three sides

30000 ÷ 3 = 10000

4. Divide 10000 by 200, not 300 because we want to find the side with one <em>x</em>, not two <em>x</em> (there are two sides adding on to the side with 300, but only one side on the side with 200)

10000÷200= 50

I know the steps are weird, but I know this is the right answer because this was on the unit test (same misspelling and everything lol) and during tutoring my teacher showed me how to do it, but of course I had to forget the steps.

4 0
3 years ago
Other questions:
  • circle P has radius 10cm. two perpendicular radii are drawn, and a smaller circle is drawn tangent to both radii and tha larger
    9·2 answers
  • Is 6.89 a rational number
    11·2 answers
  • Canada has a population. That is about 1/10 as large as the United States. If Canada's population is about 32 million, about how
    11·2 answers
  • What is the value of u? Anyone knows how to solve this for me and fine the answer , who’s smart at math? I’ll give you best brai
    9·2 answers
  • To the nearest hundred is what is the greatest phone number that rounds to 2500 at least whole number
    13·1 answer
  • Please help! Final grade of my semester!
    11·1 answer
  • Choose all expressions that are equivalent to 0.8
    13·2 answers
  • 9.9 m
    9·2 answers
  • What is the slope of (1,3) and (1,0)​
    14·2 answers
  • 5m + 6n; m = 2 and n = 4
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!