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

(a) 80 x 2 + 3 x 80 = _____ x 80
(b) 19 x 4 + 4 x 8 + 4 x 3 = _____ x 4 + 3 x 4
(c) 299 x 20 - 7 x 299 = _____ x 299
(d) 11 x 6 + 1 x 6 - 7 x 6 = 14 x 6 - 6 x _____
(a)
80 x 2 + 3 x 80 = _____ x 80
2 x 80 + 3 x 80 = _____ x 80
(2 + 3) x 80 = _____ x 80

5 x 80 =  _____ x 80

(b)
19 x 4 + 4 x 8 + 4 x 3 = _____ x 4 + 3 x 4
(19 + 8 + 3) x 4 = = _____ x 4 + 3 x 4
30 x 4 = _____ x 4 + 3 x 4
30 x 4 - 3 x 4 = _____ x 4
(30 - 3) x 4 = _____ x 4

27 x 4 = _____ x 4

(c)
299 x 20 - 7 x 299 = _____ x 299
(20 - 7) x 299 = _____ x 299

13 x 299 = _____ x 299

(d)
11 x 6 + 1 x 6 - 7 x 6 = 14 x 6 - 6 x _____
(11 + 1 - 7) x 6 = 14 x 6 - _____ x 6
5 x 6 = 14 x 6 - _____ x 6
14 x 6 - 5 x 6 = _____ x 6
(14 - 5) x 6 = _____ x 6

9 x 6 = _____ x 6

Answer(s): 5, 27, 13, 9