Question

Which equations illustrate the commutative property of addition?

Choose exactly two answers that are correct.

A.
–9 + 11 = 11 + (–9)

B.


C.
–5 + [6 + (–4 + 3.1)] = – 5 + [(–4 + 3.1) + 6]

D.
–7.4 + (13 + 2.1) = (–7.4 + 13) + 21

Answer 1

B. https://static.k12.com/bank_packages/files/media/mathml_de68c603bd74dd8abe991f7a4928d1f356c5e273_1.gif

Answer 2

@K12IsAwesome @K12awesomeness @InstagramModel

Answer 3

@rvc

Answer 4

@K12IsAwesome @K12awesomeness

Answer 5

JEEZ THATS A HUGE PROBLEM O_O

Answer 6

ikr

Answer 7

well you always do parenthesis first

Answer 8

-4/1 + 1/5

Answer 9

It's either C or A

Answer 10

-20 / 5 + 1 /5

Answer 11

how u figuer @K12awesomeness

Answer 12

-19 is the parenthesis

Answer 13

1/3 plus -19/1

Answer 14

no -9

Answer 15

multiply -19/1 by 3

Answer 16

wait what

Answer 17

I did the property of addition. @Victory23

Answer 18

im using pemdas o3o

Answer 19

?oh okay srry carry on

Answer 20

-19/1 * 3 is -57/3

Answer 21

You have to use the property of addition also. Without that, your not going to get it correct.

Answer 22

anyway.. carry on.

Answer 23

1/3 + -57/3 is -56/3

Answer 24

k

Answer 25

there can be 2 answers

Answer 26

but you cant divide that otherwise itll go on forever

Answer 27

so 18.6

Answer 28

WAITTTTTTTT

Answer 29

-18.6666667 is what i got so we round

Answer 30

and yes i think

Answer 31

@K12awesomeness is this correct? o3o

Answer 32

WE DONT NEED TO SLOVE THIS WE NEED TO FIND the commutative property of addition?

Answer 33

oh o-o

Answer 34

Yeah, and yes, if your doin PEMDAS then yes 18.6 would be it if u rounded.

Answer 35

But in our case, we have to do the property of addition

Answer 36

i got confused im sorry XD

Answer 37

its okay

Answer 38

it's totally okay!!!

Answer 39

^^

Answer 40

so do u guys know the answer?

Answer 41

i have no clue im sorry

Answer 42

It's either C or A.. I'm not sure though.. Look at this:
https://www.khanacademy.org/math/pre-algebra/order-of-operations/arithmetic_properties/v/commutative-property-for-addition

Answer 43

k

Answer 44

wow i havent used khan academy in forever

Answer 45

its been 3 years O_O

Answer 46

same here! I just found it agian!! lol

Answer 47

so A C

Answer 48

I think so...

Answer 49

k

Answer 50

Either A and C or C and D

Answer 51

i'dd go with C and A to be honest

Answer 52

i'd*