a)1 208 x 3 + 1 208 x 7 = 1 208 x (3 + 7) = 1 208 x 10 = 12 080

b)304 x 3 + 304 x 5 + 304 x 2 = 304 x (3 + 5 + 2) = 304 x 10 = 3 040

c)2 534 x 10 - 2 534 x 9 = 2 534  (10 - 9) = 2 534 x 1 = 2 534

d)69 x 10-69 x 6 - 69 x 3 = 69 x (10 - 6 - 3) = 69 x 1 = 69

a)1208 x 3 + 1208 x 7
=1208 x (3+7)
=1208 x 10
=12080

2534 x 10 - 2534 x 9
=2534 x (10-9)
=2534 x 1
=2534

b)304 x 3 + 304 x 5 + 304 x 2
= 304 x (3+5+2)
=304 x 10
=3040


69 x 10 - 69 x 6 - 69 x 3
= 69 x (10-6-3)
=69 x 1
=69