Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)

(a) 51 x 9 + 3 x 51 = _____ x 51
(b) 14 x 9 + 9 x 2 + 9 x 2 = _____ x 9 + 10 x 9
(c) 185 x 10 - 6 x 185 = _____ x 185
(d) 10 x 3 + 2 x 3 - 3 x 3 = 18 x 3 - 3 x _____
(a)
51 x 9 + 3 x 51 = _____ x 51
9 x 51 + 3 x 51 = _____ x 51
(9 + 3) x 51 = _____ x 51

12 x 51 =  _____ x 51

(b)
14 x 9 + 9 x 2 + 9 x 2 = _____ x 9 + 10 x 9
(14 + 2 + 2) x 9 = = _____ x 9 + 10 x 9
18 x 9 = _____ x 9 + 10 x 9
18 x 9 - 10 x 9 = _____ x 9
(18 - 10) x 9 = _____ x 9

8 x 9 = _____ x 9

(c)
185 x 10 - 6 x 185 = _____ x 185
(10 - 6) x 185 = _____ x 185

4 x 185 = _____ x 185

(d)
10 x 3 + 2 x 3 - 3 x 3 = 18 x 3 - 3 x _____
(10 + 2 - 3) x 3 = 18 x 3 - _____ x 3
9 x 3 = 18 x 3 - _____ x 3
18 x 3 - 9 x 3 = _____ x 3
(18 - 9) x 3 = _____ x 3

9 x 3 = _____ x 3

Answer(s): 12, 8, 4, 9