Last Digit Detective
Use the last digits to rule out answers. A match only means it could fit.
133 × 12
133 × 123 × 2 = 6
15976 ≠ 7× Cannot fit
16066 = 6? Could fit
Use the last digits to rule out answers. A match only means it could fit.
15976 ≠ 7× Cannot fit
16066 = 6? Could fit