成都金科装饰因业务需要
1. more than ten by ten: ,jordan shoes 9
formulas: first by the head plus tail end, tail by tail.
cases: 12 × 14 =?
solution: 1 × 1 = 1
2 +4 = 6
2 × 4 = 8
12 × 14 = 168
Note: a bit multiply, not to use 0-digit placeholder.
2. head the same,coco chanel, complementary tail (tail sum equal to 10):
formulas: a first add 1 to the head by head, tail by tail.
cases: 23 × 27 =?
solution: 2 +1 = 3
2 × 3 = 6
3 × 7 = 21
23 × 27 = 621
Note: a bit multiply, not enough use the 0-digit placeholder.
3. The first multiplier complementary, the same as another multiplier:
formulas: a first add 1 to the head by head, tail by tail.
cases: 37 × 44 =?
solution: 3 +1 = 4
4 × 4 = 16
7 × 4 = 28
; 37 × 44 = 1628
Note: a bit multiply, not use the 0-digit placeholder.
4. scores of one by dozens of one:
formulas: the first by head, head plus head, tail by tail.
cases: 21 × 41 =?
solution: 2 × 4 = 8
2 +4 = 6
1 × 1 = 1
; 21 × 41 = 861
5.11 by any number:
formulas: sum of fixed fate,LV boots, and the middle of the drop-down.
cases: 11 × 23125 =?
solution: 2 +3 = 5
3 +1 = 4
1 +2 = 3
; 2 +5 = 7
2 and 5, respectively inclusive
11 × 23125 = 254375
Note: and over 10 to enter one.
6. dozen by any number:
formulas: Second Take the first is not the fate of several trends, the first factor of a second factor by multiplying the number behind each,timberland men 6 inch boots, plus the next digit, again whereabouts.
cases: 13 × 326 =?
solution: 13 bits is 3
3 × 3 +2 = 11
3 × 2 +6 = 12
; 3 × 6 = 18
13 × 326 = 4238
Note: and over 10 to enter 1.
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