கணித பெருக்கல்களை சரி பார்க்க சுலபமான வழி
How do you verify your multiplication? Here is a simple method.
Always reduce computations to a single digit.
43
x 92
How do you verify your multiplication? Here is a simple method.
Always reduce computations to a single digit.
43
x 92
------
3956
Add 4 + 3 = 7
Add 9 + 2 = 11 then reduce to a single digit 1 +1 = 2
Multiply 2 x 7 = 14 then reduce to a single digit 1 + 4 = 5
Add 3+9+5+6 = 23 then reduce to a single digit 2 + 3 = 5
Both numbers (5) are equal, therefore multiplication is correct.
Another example
358
x 492
-------
176136
Add 3 + 5 + 8 = 16 then reduce to a single digit 1 + 6 = 7
Add 4 + 9 + 2 = 15 then reduce to a single digit 1 + 5 = 6
Multiply 7 x 6 = 42 then reduce to a single digit 4 + 2 = 6
Add 1+7+6+1+3+6 = 24 then reduce to a single digit 2 + 4 = 6
Both numbers (6) are equal, therefore multiplication is correct.
3956
Add 4 + 3 = 7
Add 9 + 2 = 11 then reduce to a single digit 1 +1 = 2
Multiply 2 x 7 = 14 then reduce to a single digit 1 + 4 = 5
Add 3+9+5+6 = 23 then reduce to a single digit 2 + 3 = 5
Both numbers (5) are equal, therefore multiplication is correct.
Another example
358
x 492
-------
176136
Add 3 + 5 + 8 = 16 then reduce to a single digit 1 + 6 = 7
Add 4 + 9 + 2 = 15 then reduce to a single digit 1 + 5 = 6
Multiply 7 x 6 = 42 then reduce to a single digit 4 + 2 = 6
Add 1+7+6+1+3+6 = 24 then reduce to a single digit 2 + 4 = 6
Both numbers (6) are equal, therefore multiplication is correct.
இந்த பதிவு பிடித்திருந்தால் உங்கள் வலையில் இனைக்கவும்
No comments:
Post a Comment