-
Question
SCREEN[1]
Multiply 900 by 9
or
If one bag has 900 mangoes,
Then total how many mangoes are there in 9 bags
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Step : 1
SCREEN[2]
Number 1 = 900
Number 2 = 9
Multiplying 900 by 9 means
adding (100 + 100 + 100 + 100 +100 + 100 + 100 + 100 + 100), 9 times
100 100 100 100 100 100 100 100 100
+ 100 100 100 100 100 100 100 100 100
+ 100 100 100 100 100 100 100 100 100
+ 100 100 100 100 100 100 100 100 100
+ 100 100 100 100 100 100 100 100 100
+ 100 100 100 100 100 100 100 100 100
+ 100 100 100 100 100 100 100 100 100
+ 100 100 100 100 100 100 100 100 100
+ 100 100 100 100 100 100 100 100 100
----------------------------------------------------------------------------------
= 900 900 900 900 900 900 900 900 900
Total = 900 + 900 + 900 + 900 + 900 + 900 + 900 + 900 + 900
Result = 8100
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Step : 2
SCREEN[3]
Number 1 = 900
Number 2 = 9
900
x 9
=
(100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100)
x 9
(900 + 900 + 900 + 900 + 900 + 900 + 900 + 900 + 900)
8100
Result = 8100
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Step : 3
SCREEN[4]
+ (100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100)
+ (100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100)
+ (100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100)
+ (100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100)
+ (100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100)
+ (100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100)
+ (100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100)
+ (100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100)
+ (100 + 100 + 100 + 100 + 100 + 100 + 100 + 100 + 100)
-------------------------------------------------------------------------------------------
=
+ 9 groups of hundred
+ 9 groups of hundred
+ 9 groups of hundred
+ 9 groups of hundred
+ 9 groups of hundred
+ 9 groups of hundred
+ 9 groups of hundred
+ 9 groups of hundred
+ 9 groups of hundred
--------------------------------
= 81 groups of hundred = 8100
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Step : 4
SCREEN[5]
900
x 9
-----------
= 9 groups of hundred
x 9
--------------------
= 81 groups of hundred
= 8100
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