Amar Sir: Basic Calculation-03

Friday, 1 May 2015

1. Multiplication of any number by 11

(i) 29 ´ 11= 319 [2, 2+9, 9]

(ii) 46 ´ 11= 506 [(4, 4+6, 6)=(4+1, 0, 6)=(506)]

(iii) 84 ´ 11= 924 [(8, 8+4, 4)=(8+1, 2, 4)=(924)]

(iv) 97 ´ 11= 1067 [(9, 9+7, 7)=(9+1, 6, 7)=(1067)]

(v) 254 ´ 11= 2794 [(2, 2+5, 5+4, 4)=(2, 7, 9, 4)=(2794)]

(vi) 437 ´ 11= 4807 [(4, 4+3, 3+7, 7)=(4, 8, 0, 7)=(4807)]

(vii) 906 ´ 11= 9966 [(9, 9+0, 0+6, 6)=(9, 9, 6, 6)=(9966)]

(viii) 789 ´ 11= 8679 [(7, 7+8, 8+9, 9)=(8, 6, 7, 9)=(8679)]

(ix) 2438 ´ 11= 26818 [(2, 2+4, 4+3, 3+8, 8)=(2, 6, 8, 1, 8)=(26818)]

(x) 3586 ´ 11= 39446 [(3, 3+5, 5+8, 8+6, 6)=(3, 9, 4, 4, 6)=(39446)]

2. Multiplication of any number by 111

(i) 234 ´ 111= 25974

[(2, 2+3, 2+3+4, 3+4, 4)=(2, 5, 9, 7, 4)=(25974)]

(ii) 542 ´ 111= 60162

[(5, 5+4, 5+4+2, 4+2, 2)=(6, 0, 1, 6, 2)=(60162)]

(iii) 743 ´ 111= 82473

[(7, 7+4, 7+4+3, 4+3, 3)=(8, 2, 4, 7, 3)=(82473)]

(iv) 908 ´ 111= 100788

[(9, 9+0, 9+0+8, 0+8, 8)=(10, 0, 7, 8, 8)=(100788)]

(v) 9034 ´ 111= 1002774

[(9, 9+0, 9+0+3, 0+3+4, 3+4, 4)=(10, 0, 2, 7, 7, 4)=(1002774)]

(vi) 6194 ´ 111= 687534

[(6, 6+1, 6+1+9, 1+9+4, 9+4, 4)=(6, 8, 7, 5, 3, 4)=(687534)]

(vii) 9008 ´ 111= 999888

[(9, 9+0, 9+0+0, 0+0+8, 0+8, 8)=(9, 9, 9, 8, 8, 8)=(999888)]

(viii) 16234 ´ 111= 1801974

[(1, 1+6, 1+6+2, 6+2+3, 2+3+4, 3+4, 4)=(1, 8, 0, 1, 9, 7, 4)=(1801974)]

(ix) 90004 ´ 111= 9990444

[(9, 9+0, 9+0+0, 0+0+0, 0+0+4, 0+4, 4)=(9, 9, 9, 0, 4, 4, 4)=(9990444)]

Amar Sir