Math Trick
How to multiple two and three digits with short trick helpful in many competitive exams
TWO DIGIT MULTIPLY TRICKS
Two digit- AB * CD
Ist step B *D
2ND STEP A * D + B * C
Last step A* C
For example 42*56
Ist step 2 * 6 =12 12
2ND STEP 4* 6 + 2 * 5= 34 34
Last step 4* 5=20 15
203412
ADDING THESE TERM LIKE THIS
31 ß base digits
+ 2042
———————-
2352
THREE DIGITS MULTIPLY TRICKS
Three digit- ABC * DEF
Ist step C * F
2NDSTEP B * F + C * E
3NDSTEP A * F + B* E + c* D
4TH STEP A*E+ B * D
Last step A*D
For example
346 * 527
Ist step 6 * 7 = 42 42
2ND STEP 4* 7 + 6 * 2= 40 40
3ND STEP 3 * 7 + 4* 2 + 6* 5=59 59
4TH STEP 3* 2+ 4 * 5 =26 26
Last step 3* 5 =15 15
Combine these term like this
15 2659 4042
ADDING THESE TERMS LIKE THIS
2544 ß base digits
+ 156902
———————-
182342
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