Question

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

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.

Answer 1

@Vocaloid do you know how to do thi?

Answer 2

@Phebe can you help

Answer 3

@Phebe can you help

Answer 4

Give me one minute

Answer 5

k

Answer 6

She wrote identity instead of associative in step 2

Answer 7

ok thanks

Answer 8

You're very welcome! :)