| Math Shortcuts |
| Multiplication by 11 |
Examples
| Multiply 43 by 11 Think it as 043 x 11 Bring down the ones digit ---- ---- 3 Add 4 and 3 ( 7 ) ---- 7 3 Add 0 and 4 ( 4) 473 (answer)
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Multiply 78 by 11 Think it as 078 x 11 Bring down the ones digit ---- ---- 8 Add 7 and 8 ( 15) ---- 5 8 carry 1 Add 0 and 7 plus the 1 you carred (8). 858 (answer) |
Multiply 284 by 11 Think it as 0284 x 11 Bring down the ones digit ---- ---- 4 Add 8 and 4 ( 12) ---- 2 4 carry 1 Add 2 and 8 plus the 1 you carried (1) (11). --- 124 carry 1 Add 2 and 0 plus the 1 you carried (1) (3). 3124 (answer) |
