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2 years ago

I need help to find the lcm of 81 and 3

Mathematics

2 answers:

velikii [3]2 years ago

8 0

Answer:

81 is the LCM of 81 and 3

Step-by-step explanation:

81 is the smallest (least) number that both (common) 81 and 3 "go into" (multiple)

81 goes into 81.

3 goes into 81.

81 is the smallest number that they both go into.

Lina20 [59]2 years ago

4 0

Hi there,

please see below for solution steps :

________

$\ast$ Key moment to solving this problem :

the LCM stands for least common multiple

Okay. Now, what is the lcm of 3 and 81?

One way to find the lcm is : list several multiples of each number.

However, it's not a really efficient way, because listing all the multiples of 3 until we get to 81 is time-consuming!

So we can ask ourselves one question : Is 81 divisible by 3?

Sure! with this in mind, let's ask ourselves another question : what is the lcm of 81 and 3?

The answer to that is $\boldsymbol{81}$ .

Hope the answer - and explanation - made sense to you,

happy studying !! $\bold{Frozen \ melody}$

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3 years ago

Read 2 more answers

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3 years ago

Evaluate each expression if r= −3, s=4, and t= −7.

saul85 [17]

Answer:

a. $5$

b. $-1$

c. $132$

Step-by-step explanation:

Given:

$r =-3$ , $s = 4$ and $r = -7$

$\sqrt{s} +|r| \\ \sqrt{4} +|-3| \\ 2 +3 \\ 5$

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3 years ago