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

(a) 86 x 2 + 4 x 86 = _____ x 86
(b) 11 x 4 + 4 x 4 + 4 x 2 = _____ x 4 + 2 x 4
(c) 270 x 15 - 1 x 270 = _____ x 270
(d) 15 x 8 + 4 x 8 - 4 x 8 = 18 x 8 - 8 x _____
(a)
86 x 2 + 4 x 86 = _____ x 86
2 x 86 + 4 x 86 = _____ x 86
(2 + 4) x 86 = _____ x 86

6 x 86 =  _____ x 86

(b)
11 x 4 + 4 x 4 + 4 x 2 = _____ x 4 + 2 x 4
(11 + 4 + 2) x 4 = = _____ x 4 + 2 x 4
17 x 4 = _____ x 4 + 2 x 4
17 x 4 - 2 x 4 = _____ x 4
(17 - 2) x 4 = _____ x 4

15 x 4 = _____ x 4

(c)
270 x 15 - 1 x 270 = _____ x 270
(15 - 1) x 270 = _____ x 270

14 x 270 = _____ x 270

(d)
15 x 8 + 4 x 8 - 4 x 8 = 18 x 8 - 8 x _____
(15 + 4 - 4) x 8 = 18 x 8 - _____ x 8
15 x 8 = 18 x 8 - _____ x 8
18 x 8 - 15 x 8 = _____ x 8
(18 - 15) x 8 = _____ x 8

3 x 8 = _____ x 8

Answer(s): 6, 15, 14, 3