In which step did his first error occur?
anani used 10 as an anchor to find the difference of 16 and
7. his steps are shown.
step 1: the phrase "difference of" means subtraction.
step 2: 16-6 = 10
step 3: since 7 is 1 more than 6, 1 more needs to be added
to 10.
step 4: therefore, 16 - 7 = 11.

step 1
step 2
step 3
step 4

Option 3.

Step-by-step explanation:

It is given that Anani used 10 as an anchor to find the difference of 16 and 7.

The correct steps are

Step 1: The phrase "difference of" means subtraction.

Step 2: 16-6 = 10

Step 3: Since 7 is 1 more than 6, 1 more needs to be subtracted

to 10.

16-6-1 = 10-1

Step 4: Therefore, 16 - 7 = 9.

Anani did his first error in step 3.

Therefore, the correct option is 3.

answer: a

step-by-step explanation:

10.2 units