Mathematics

Lawrence Martinez

16 August, 23:15

Catron evaluates the expression (negative 9) (2 and two-fifths) using the steps below.

Step 1: (Negative 9) (2 + two-fifths)

Step 2: (Negative 9) (Negative 2) + (negative 9) (two-fifths)

Step 3: Negative 18 + (negative 9) (two-fifths)

Step 4: (negative 27) (two-fifths)

Solution: Negative StartFraction 54 over 5 EndFraction = Negative 10 and four-fifths

Which describes Catron's error?

She incorrectly broke up 2 and two-fifths.

She incorrectly distributed the - 9; she should have distributed 2.

She did not follow order of operations.

She incorrectly converted from an improper fraction to a mixed number.