Question

Three students evaluated the expression 12−2×6÷3+7
. The steps in each student's process are shown.
Leila's Work Fabian's Work Jaylah's Work
12−2×6÷3+7

10×6÷3+7

60÷3+7

20+7

27

12−2×6÷3+7

12−12÷3+7

12−4+7

12−11

1

12−2×6÷3+7

12−12÷3+7

12−4+7

8+7

15

Complete the statements.
LeilaFabianJaylah evaluated the numeric expression correctly.

Answer 1

Only Jaylah evaluated the expression correctly.

- Leila: Incorrect — she subtracted 2 from 12 first (12−2→10) instead of doing multiplication/division first.
- Fabian: Incorrect — he did multiplication/division correctly to get 12−4+7, but then combined 4+7 before subtracting (giving 12−11) instead of doing subtraction then addition.
- Jaylah: Correct — 2×6=12, 12÷3=4 → 12−4+7 → (12−4)=8 → 8+7=15.

So the value of the expression is 15.