Question

helps medal and fan



Match each item in Column A to an answer in Column B.
What property is shown by the equation?

column A

--abc 1. (34 + 11) + 9 = (11 + 34) + 9

--abc 2. 25 + (-15 + 4) = (25 + (-15)) + 4

--abc 3. -(-21 + 8) = 21 + (-8)

--abc 4. -30 + (-16) = -16 + (-30)

column B

A. commutative property

B. associative property


C. opposite of a sum property

Answer 1

\[a + (b+c) = (a + b) + c \quad \quad \text{Associative Property}\]

Answer 2

1 is b

Answer 3

??????????

Answer 4

Yes, you are right..

Answer 5

What about 2??

Answer 6

c???

Answer 7

2 is c ??

Answer 8

Are you seeing any difference between 1 and 2?

Just there right hand side is on left hand side and left on right with respect to 1, right??

Answer 9

the parinthisis change numbers

Answer 10

See, whether \(a + (b+c) = (a+b) + c\) or \((a+b) + c = a+(b+c)\), they both are one and the same, and they come under Associative Property..

Answer 11

ohh so 2 is b

Answer 12

Parenthesis are only changed there, it is same as first case only..

Answer 13

what is communitive property and oppisit of a sum property

Answer 14

I don't know about opposite of sum property, and Commutative Property says:

\[a+ b = b+a\]

Answer 15

so 3 is a

Answer 16

Actually not...

Answer 17

no wait 4 is b meaning 3 is c

Answer 18

You can say it for 4th one...

Answer 19

mess up i feel stupid i ment 4 is a and 3 is c

Answer 20

Yes, for 3 you can say that 3 is opposite of Sum Property..

May be multiply by -1 is Opposite of Sum Property ie:

\[-(a+b) = -a -c\]

Answer 21

Yes, 4 is a and 3 is c.. Good..

1 and 2 are b..

Cleared?

Answer 22

tanx

Answer 23

Actually to my knowledge, multiply comes under Distribution..

Distribution Property says:

\[a(b+c) = ab + ac \quad \quad \text{a= -1 \in your question}\]

Answer 24

Sorry, the property name is : Distributive Property not Distribution.. :)

Welcome.. :)

Answer 25

What is the value of the expression?
12.4 + (–2 + 1.6)

Answer 26

What is the value of the expression?
12.4 + (-2 + 1.6)