10 - 25 - 6 + (-2)

-15 - 6 + (-2) Step 1

-9 + (-2) Step 2

-11 Step 3

Which of the following best describes Marissa's mistake?

Question

Mathematics

Karsyn Henderson

14 July, 18:44

10 - 25 - 6 + (-2)

-15 - 6 + (-2) Step 1

-9 + (-2) Step 2

-11 Step 3

Which of the following best describes Marissa's mistake?

+2

Answers (1)

Know the Answer?

Anabella Fry · Answer 1

Mistake is found in step 2 where the person did their math wrong. You see - 15-6 is another way of saying - 15 + - 6 because of Keep Change Change (KCC). So, - 15+-6 = - 21 and then add it to - 2, which gives us - 23.

10 - 25 - 6 + (-2)-15 - 6 + (-2) Step 1-9 + (-2) Step 2-11 Step 3Which of the following best describes Marissa's mistake?

10 - 25 - 6 + (-2)

-15 - 6 + (-2) Step 1

-9 + (-2) Step 2

-11 Step 3

Which of the following best describes Marissa's mistake?