Ada is showing her work in simplifying (5.9 – 1.8) – 6.2 + 4.1. In which step did Ada make an error?
Step 1: (5.9 – 1.8) – 6.2 + 4.1
Step 2: 5.9 + (–1.8 – 6.2) + 4.1 (associative property)
Step 3: 5.9 – 8 + 4.1
Step 4: 5.9 + 4.1 – 8 (associative property)
Step 5: 10 – 8 = 2
A). Step 2; she wrote associative instead of commutative
B). Step 2; she wrote associative instead of distributive
C). Step 4; she wrote associative instead of commutative
D). Step 4; she wrote associative instead of distributive
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Hey @atreyu6s3x6 <3
need some help?
yes I do :(
im am not positive that the answer is b
i was heading for c? but i want to be positive
sorry love, slow internet haha but lets do this step by step :)
Associative Property: The associative property states that you can add or multiply regardless of how the numbers are grouped. By 'grouped' we mean 'how you use parenthesis'. In other words, if you are adding or multiplying it does not matter where you put the parenthesis.
Step 4 doesn't deal with associative property, it deals with the commutative property.
Commutative Property: The word "commutative" comes from "commute" or "move around", so the Commutative Property is the one that refers to moving stuff around. For addition, the rule is "a + b = b + a"; in numbers, this means 2 + 3 = 3 + 2. For multiplication, the rule is "ab = ba"; in numbers, this means 2×3 = 3×2. @atreyu6s3x6
seems correct haha sorry my interwebs are slow as hell :P