We known that Speed and Accuracy are keys of competitive mathematics .So we start a series Magic (Technique) for improve your solving SPEED.
Basic equipments (tools) for magic –
1-Learn table till 30
2-Learn square till 30
3-Learn cube till 20
2-Learn square till 30
3-Learn cube till 20
4- BODMAS rules for simplification
B O D M A S
Bricket Of Divide Multiplication Addition Subtraction
Multiple of Two digit
(Rules -If a number is lesser 20) :
Solution- 34×16
Trick 1– 340+204
=544
=544
Step 1– Take greater number here. —- 34
Step 2– Place a zero ‘0’
Become like- 340
Step 2– Place a zero ‘0’
Become like- 340
Step 3– Greater no multiply by last digit of other no
Like 34×6 =204
Step 4– Add step2 and step 3
340+204
Ans =544
340+204
Ans =544
Trick 2(Universal Rules)
Solution- 34×16
Step1–
4×6=2(carry forward)…4 (Mental calculation)
Step 2-
(6×3+4×1)+2(From step 1)
=2(carry forward)…4
Step3- Last Step
— 1×3
=3 + 2(From step 2)
=5
Now by step 3+ step 2+step 1
Your ans- 544
Its require more practice but this is universal rule for two digit multiplication.
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