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Multiply the decimals $4\cdot 9.1$

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 Solution

 Videos

Multiplying by multiples of 10 | Multiplication and division | Arithmetic | Khan Academy

https://www.youtube.com/watch?v=jb8mFpA1YI8

Multiplying and dividing in scientific notation (example) | Pre-Algebra | Khan Academy

https://www.youtube.com/watch?v=497oIjqRPco

Multiplying multiples of powers of 10 | Numbers and operations | 8th grade | Khan Academy

https://www.youtube.com/watch?v=tV8cMNYi4q4

Pre-Calculus - Multiplication of complex numbers (root(-10))^2

https://www.youtube.com/watch?v=efCJ9LeHaYs

Multiplying a decimal by a power of 10 | Decimals | Pre-Algebra | Khan Academy

https://www.youtube.com/watch?v=mV0RxDZG05A

Algebra 2 - Solving rational equations learn the easy way to solve 4/x+3 = 10/(2x‐1)

https://www.youtube.com/watch?v=ZU1KOE64xpg

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1

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5

6

7

8

9

0



a

b

c

d

f

g

m

n

u

v

w

x

y

z

.

(◻)

+

-

×

◻/◻

/

÷

◻²

◻^◻

√◻

√

^◻√◻

^◻√

∞

e

π

ln

log

log_◻

lim

d/dx

D^□_x

∫

∫^◻

|◻|

θ

=

>

<

>=

<=

sin

cos

tan

cot

sec

csc

asin

acos

atan

acot

asec

acsc

sinh

cosh

tanh

coth

sech

csch

asinh

acosh

atanh

acoth

asech

acsch

 How to improve your answer:

 Main Topic: Multiplication of Decimals

To multiply decimals, line up the numbers on the right ignoring the decimal point and multiply them like whole numbers. Then, in the result, place the decimal point equal to the sum of decimal places of both multiplied numbers.

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