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

(a) 30 x 4 + 5 x 30 = _____ x 30
(b) 17 x 7 + 7 x 9 + 7 x 4 = _____ x 7 + 9 x 7
(c) 183 x 11 - 6 x 183 = _____ x 183
(d) 11 x 5 + 7 x 5 - 4 x 5 = 19 x 5 - 5 x _____
(a)
30 x 4 + 5 x 30 = _____ x 30
4 x 30 + 5 x 30 = _____ x 30
(4 + 5) x 30 = _____ x 30

9 x 30 =  _____ x 30

(b)
17 x 7 + 7 x 9 + 7 x 4 = _____ x 7 + 9 x 7
(17 + 9 + 4) x 7 = = _____ x 7 + 9 x 7
30 x 7 = _____ x 7 + 9 x 7
30 x 7 - 9 x 7 = _____ x 7
(30 - 9) x 7 = _____ x 7

21 x 7 = _____ x 7

(c)
183 x 11 - 6 x 183 = _____ x 183
(11 - 6) x 183 = _____ x 183

5 x 183 = _____ x 183

(d)
11 x 5 + 7 x 5 - 4 x 5 = 19 x 5 - 5 x _____
(11 + 7 - 4) x 5 = 19 x 5 - _____ x 5
14 x 5 = 19 x 5 - _____ x 5
19 x 5 - 14 x 5 = _____ x 5
(19 - 14) x 5 = _____ x 5

5 x 5 = _____ x 5

Answer(s): 9, 21, 5, 5