Mathematics

Alaina

21 January, 12:10

Maya is showing her work in simplifying (5.2 - 4.5) - 5.5 + 4.8. Identify any error in her work or reasoning.

Step 1: (5.2 - 4.5) - 5.5 + 4.8

Step 2: 5.2 + ( - 4.5 - 5.5) + 4.8 (identity property)

Step 3: 5.2 - 10 + 4.8

Step 4: 5.2 + 4.8 - 10 (commutative property)

Step 5: 10 - 10 = 0

Answers:

She wrote identity instead of commutative in Step 2.

She wrote commutative instead of distributive in Step 4.

She wrote identity instead of associative in Step 2.

She wrote commutative instead of associative in Step 4.

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