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

(a) 38 x 2 + 9 x 38 = _____ x 38
(b) 18 x 9 + 9 x 5 + 9 x 2 = _____ x 9 + 10 x 9
(c) 208 x 13 - 2 x 208 = _____ x 208
(d) 10 x 3 + 6 x 3 - 8 x 3 = 15 x 3 - 3 x _____
(a)
38 x 2 + 9 x 38 = _____ x 38
2 x 38 + 9 x 38 = _____ x 38
(2 + 9) x 38 = _____ x 38

11 x 38 =  _____ x 38

(b)
18 x 9 + 9 x 5 + 9 x 2 = _____ x 9 + 10 x 9
(18 + 5 + 2) x 9 = = _____ x 9 + 10 x 9
25 x 9 = _____ x 9 + 10 x 9
25 x 9 - 10 x 9 = _____ x 9
(25 - 10) x 9 = _____ x 9

15 x 9 = _____ x 9

(c)
208 x 13 - 2 x 208 = _____ x 208
(13 - 2) x 208 = _____ x 208

11 x 208 = _____ x 208

(d)
10 x 3 + 6 x 3 - 8 x 3 = 15 x 3 - 3 x _____
(10 + 6 - 8) x 3 = 15 x 3 - _____ x 3
8 x 3 = 15 x 3 - _____ x 3
15 x 3 - 8 x 3 = _____ x 3
(15 - 8) x 3 = _____ x 3

7 x 3 = _____ x 3

Answer(s): 11, 15, 11, 7