Last case for multiplying with multipliers such as 9, 99, 999...
check previous parts as they are very useful .part 1, part 2
Case 3: If multiplier has more digits than multiplicand. Here there is no much change it is almost same as the first case.
1) 6 * 99
Trick :
05\94
Answer: 594
2) 54 * 999
Trick :
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check previous parts as they are very useful .part 1, part 2
Case 3: If multiplier has more digits than multiplicand. Here there is no much change it is almost same as the first case.
1) 6 * 99
Trick :
- Make multiplicand with an equal number of as multiplier. here multiplier is of 2 digits so add 0 before 6 to make it two digit number. (It is not mandatory step only to avoid further confusion it is used).
- subtract 1 from the multiplicand
- Now find out the compliment of 06 so 06 is subtracted from 100, not 10 as it is 2 digit number
05\94
Answer: 594
2) 54 * 999
Trick :
- 054 (adding 0 to left side of multiplicand).
- 054-1= 053=> subtract 1 from multiplicand.
- compliment of 054 => 1000-054 => 946
53\946
Answer: 53946
similarly, do others
1) 83 * 999 =82917
2)67 * 999 =66933
3) 561 *9999 = 5609439
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