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 Step 2; she wrote associative instead of commutative Step 2; she wrote associative instead of distributive Step 4; she wrote associative instead of commutative Step 4; she wrote associative instead of distributive
Answer:
C Step 4: She wrote associative property instead of commutative .
Step-by-step explanation:
We are given that Ada is showing her work in simplifying
(5.9-1.8)-6.2+4.1
We have to find Ada makes an error
Step 1:(5.9-1.8)-6.2+4.1
Step 2: 5.9+(-1.8-6.2)+4.1
Associative property : (a+b)+c=a+(b+c)
Step 3:5.9-8+4.1
Step 4 : 5.9 +4.1-8
Using commutative property
Step 5: 10-8=2
Ada makes an error in step 4. By using associative property in place of commutative property
Option C is true.
Answer : C Step 4: She wrote associative property instead of commutative .