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

(a) 69 x 4 + 9 x 69 = _____ x 69
(b) 17 x 9 + 9 x 2 + 9 x 4 = _____ x 9 + 6 x 9
(c) 228 x 10 - 2 x 228 = _____ x 228
(d) 13 x 3 + 8 x 3 - 8 x 3 = 17 x 3 - 3 x _____
(a)
69 x 4 + 9 x 69 = _____ x 69
4 x 69 + 9 x 69 = _____ x 69
(4 + 9) x 69 = _____ x 69

13 x 69 =  _____ x 69

(b)
17 x 9 + 9 x 2 + 9 x 4 = _____ x 9 + 6 x 9
(17 + 2 + 4) x 9 = = _____ x 9 + 6 x 9
23 x 9 = _____ x 9 + 6 x 9
23 x 9 - 6 x 9 = _____ x 9
(23 - 6) x 9 = _____ x 9

17 x 9 = _____ x 9

(c)
228 x 10 - 2 x 228 = _____ x 228
(10 - 2) x 228 = _____ x 228

8 x 228 = _____ x 228

(d)
13 x 3 + 8 x 3 - 8 x 3 = 17 x 3 - 3 x _____
(13 + 8 - 8) x 3 = 17 x 3 - _____ x 3
13 x 3 = 17 x 3 - _____ x 3
17 x 3 - 13 x 3 = _____ x 3
(17 - 13) x 3 = _____ x 3

4 x 3 = _____ x 3

Answer(s): 13, 17, 8, 4