Question

What should be added to 3 times 39 to get 12 times 39 ... (a) 4×39 (b) 9×12 (c) 9×39 (d) 15 ×39

Answer 1

12 x 39 = 39 x 12 = 39 (3 + 9) = (3 x 39) + (9 x 39) = 468

Answer

(c) 9×39