Question

Complete an error analysis for each of the questions below.

Answer 1

Answers:

1) The errors that were made in this expression are that
`(-(1)/(4))` was converted to
`(-(1)/(12))` incorrectly when it’s supposed to convert to
`(-(3)/(12))`,
`(2)/(3)` was also converted to
`(2)/(12)` incorrectly when it’s supposed to convert to
`(8)/(12)`, an order of operations step was done wrong when
`(-(1)/(12))+(2)/(12)` were added, but they are not supposed to be added since the brackets are supposed to be done first, and another order of operations step was done wrong when
`(1)/(12)` ÷
`(1)/(3)` were divided, but they are not supposed to be divided because the brackets were removed when they’re supposed to be kept and solved first.

2) The errors that were made in this expression are that an order of operations step was done wrong when
`-(15)/(40) -(32)/(40)` were subtracted, but they are not supposed to be subtracted since multiplication or division is supposed to be solved first than subtraction or addition,
`(-(4)/(5) )` was not flipped when the symbol was changed from division to multiplication when it’s supposed to change to
`(-(5)/(4) )`, and another order of operations step was done wrong when
`(3)/(10)` ×
`(-(4)/(5))` were multiplied, but they are not supposed to be multiplied because
`-(47)/(40)` ×
`(3)/(10)` are supposed to be solve first since the expression needs to be solved from left to right.

Now create two of your own showing common errors that are made, and explain why you think these are the common errors:

In the image below ↓