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

(a) 19 x 4 + 9 x 19 = _____ x 19
(b) 14 x 7 + 7 x 2 + 7 x 3 = _____ x 7 + 5 x 7
(c) 242 x 13 - 1 x 242 = _____ x 242
(d) 13 x 9 + 3 x 9 - 8 x 9 = 15 x 9 - 9 x _____
(a)
19 x 4 + 9 x 19 = _____ x 19
4 x 19 + 9 x 19 = _____ x 19
(4 + 9) x 19 = _____ x 19

13 x 19 =  _____ x 19

(b)
14 x 7 + 7 x 2 + 7 x 3 = _____ x 7 + 5 x 7
(14 + 2 + 3) x 7 = = _____ x 7 + 5 x 7
19 x 7 = _____ x 7 + 5 x 7
19 x 7 - 5 x 7 = _____ x 7
(19 - 5) x 7 = _____ x 7

14 x 7 = _____ x 7

(c)
242 x 13 - 1 x 242 = _____ x 242
(13 - 1) x 242 = _____ x 242

12 x 242 = _____ x 242

(d)
13 x 9 + 3 x 9 - 8 x 9 = 15 x 9 - 9 x _____
(13 + 3 - 8) x 9 = 15 x 9 - _____ x 9
8 x 9 = 15 x 9 - _____ x 9
15 x 9 - 8 x 9 = _____ x 9
(15 - 8) x 9 = _____ x 9

7 x 9 = _____ x 9

Answer(s): 13, 14, 12, 7