(i) (43 × 2) + (43 × 8)
= (43 × 2) + 43 × 8)
= 86 + 344
= 430
(ii) (607 x 107) - (607 x 7)
= 607 × (107 - 7)
= 607 × 100
= 60,700
(iii) (794 x 9) + (794 x 991)
= 794 × (9 + 991)
= 794 × 1000
= 794,000
(iv) 60 x 101
= 60 × (100 + 1)
= (60× 100) + 60
= 6000 + 60
= 6060
(v) 99 x 5
= 99 × 5
= 495
(vi) 5005 x 2
= 5005 × 2
= 10010
(vii) 4998 x 2
= 4998 × 2
= 9996
(viii) 1009 x 3
= 1009 × 3
= 3027
(ix) 990 x 4
= 990 × 4
= 3960
(x) 9999 x 2
= 9999 × 2
= 19,998