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
o-na [289]
3 years ago
14

Explain how usingbasic facts can help you find 10 x 20 x 30 x 40 mentally.​

Mathematics
2 answers:
Leokris [45]3 years ago
5 0

Answer:

Step-by-step explanation:

We know that 1x 2 is 2 (add the 2 zeros to make it 200)

And 3x4 is 12 (add 2 zeros and make it 1200) Then Add

Natasha_Volkova [10]3 years ago
3 0

Answer: 240000

Step-by-step explanation: 10 · 10 · 10 · 10 = 10000

1 · 2 · 3 · 4 = 24

 

10 · 20 · 30 · 40 = 240000

You might be interested in
Find the volume h=12cm r=5cm
Goshia [24]

If this was a cone, the volume would be 314.16.

  • You would just put in the radius and height in the cone volume formula which is πr²h 1/3

If this is a cylinder then the volume would be 942.48

  • Put in the radius and height in the cylinder volume formula which is πr²h
7 0
3 years ago
Please help!!!!!!!!!!
sergij07 [2.7K]

Answer:

Step-by-step explanation:

WHAT TOPIC IN MATH IS THIS?

5 0
2 years ago
What are the solutions of x^2+5x=2? Check all that apply
astraxan [27]
X^2+5x=2
you then solve by completing the square using the formula (b/2)^2 in order to create the new term. Solve for x by using this term to complete the square. 
Your answer is then
x=-5/2+-√33/2
3 0
3 years ago
Read 2 more answers
Write 6 ratinol numbers between - 3 and - 4<br><br>​
WARRIOR [948]

Answer:

-3.1, -3.2, -3.3, -3.4, -3.5, -3.6

Step-by-step explanation:

7 0
2 years ago
Jen needs to save $180 for a new camping tent. She is able to save $9 each week. How many weeks will Jen need to save to reach h
Lyrx [107]
20 weeks long all you have to do is to 180\9
3 0
3 years ago
Other questions:
  • If the list price is $500 and the trade discount rate is 20%, what is the complement rate?
    7·1 answer
  • 13, 967 round to the nearest 100​
    13·1 answer
  • A chain store plans to reduce its workforce by 4%. If there are currently 18,600 employees and 126 of them retire voluntarily, h
    10·1 answer
  • Find the percent of increase or decrease<br> 55 mph to 70 mph
    7·1 answer
  • I need help with this proof, the given and prove are at the top. Plzzzz help
    15·1 answer
  • HELP PLEASE!!!! ONLY ANSWER IF YOU KNOW, WILL GIVE BRAINLIEST!!!!
    13·2 answers
  • PLEASE HELP
    13·1 answer
  • A greenhouse owner wants to test the effectiveness of a new fertilizer on African violets. She has 60 violet seedlings that were
    11·2 answers
  • Expression
    15·1 answer
  • Write the smallest possible odd number with all the following dight 5,2,3,7.​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!