Question

Please give property used and answer.
1)-27+43-13
2)-53+(-27+44)
3)-2(-9x50)
4)[25(-7)]4

Answer 1

In the words of many a wise mother, if you have nothing nice to say, don't say anything at all.

Answer 2

Put differently: don't assume everyone on here is at the same level as you are.

Answer 3

AngelDreamGurl -- what particular properties are you learning about right now? Commutative, associative, distributive?

Answer 4

commutative, associative,identity

Answer 5

hello?

Answer 6

Sorry. So, for 1):

1) -27 + 43 - 13
-27 + 30
3

We use the associative property to do the second subtraction before we do the first part. Then we complete the addition.

2) -53 + (-27 + 44)

We can use the associative property to reorder this and combine the first two terms first:

-53 - 27 + 44
-80 + 44
-36

3) -2(-9 \(\times\) 50)

Here you can use commutativity to do the first multiplication first if you want:

(-2)(-9)(50)
(18)(50)
900

4) [25(-7)]4

Since 4 * 25 is trivially 100, we can use commutativity to do that first:

25(-7)(4)
25(4)(-7)
100(-7)
-700