2 × 3 = 6 -
Solution : 2 +3 = 5 -
3 +1 = 4 -
4 × 4 = 16 -
3 × 3 +2 = 11 -
2 +5 = 7 -
21 × 41 = 861 -
-
4, dozens of dozens of one by one : -
-
Note: a bit multiply, not use the 0 digit placeholder . -
Example : 13 × 326 =? -
Example : 11 × 23125 =? -
1, ten by ten : -
formulas : the head by head ,
gucci sunglass, tail plus tail,
gucci tee shirts, tail by tail. -
Example : 21 × 41 =? -
1 +2 = 3 -
solution : 1 × 1 = 1 -
solutions : 2 × 4 = 8 -
2 and 5 , respectively, in the end to end -
11 × 23125 = 254375 -
7 × 4 = 28 -
2 +4 = 6 -
2. head the same, complementary tail (tail add up to 10 ):-
5,11 by any number : -
solution : 3 +1 = 4 -
3, the first multiplier complementary , the same as the other multiplier : -
formulas: a first add 1 to the head by head,
conair straightener, tail by tail. -
Note: a bit multiply, not use the 0 digit placeholder . -
formulas : head by head, head plus head , tail by tail. -
Example : 23 × 27 =? -
Note : and over ten to get into one. -
Solution : 2 +1 = 3 -
-
Note: a bit multiply, not use the 0 digit placeholder . -
solution : 13 bits is 3 -
Example : 37 × 44 =? -
3 × 2 +6 = 12 -
6, a dozen by any number : -
2 +4 = 6 -
12 × 14 = 168 -
1 × 1 = 1 -
-
-
13 × 326 = 4238 -
Example : 12 × 14 =? -
2 × 4 = 8 -
formulas: a first add 1 to the head by head, tail by tail. -
37 × 44 = 1628 -
23 × 27 = 621 -
formulas : sum of fixed fate , and the middle of the drop-down . -
3 × 7 = 21 -
formulas : the whereabouts of the second movement is not the first multiplier , the first digit multiplied by the factor behind the second factor of each number ,
and now Sin is already in China, plus the next digit , again missing. -
3 × 6 = 18 -
Note : and over ten to get into one. -