Kelas : VI. D
Materi : Sifat-sifat operasi hitung
SIFAT-SIFAT
OPERASI HITUNG
Sifat-sifat operasi
hitung :
1.
Komutatif ( pertukaran )
·
4 x 5 = 5 x
4
·
7 + 3 = 3 +
7
a + b = b + a dan a x b = b x a
2.
Asosiatif ( pengelompokkan )
·
( 1 + 2 ) + 3 = 1 +
( 2 + 3 )
·
2 x ( 3 x 4 ) = ( 2
x 3 ) x 4
( a + b ) + c = a + ( b + c ) dan a x ( b x c ) = ( a x b ) x c
3.
Distributif ( penyebaran )
·
2 x ( 3 + 4 ) = ( 2 x 3 )
+ ( 2 x 4 )
·
( 3 x 5 ) - ( 3
x 2 ) = 3 x ( 5 – 2 )
a x ( b + c ) = ( a x b ) + ( a x c ) dan ( a x b ) - ( a x c ) = a x ( b - c )
L A T I H A N
- Gunakanlah sifat-sifat bilangan berikut dan hitunglah hasilnya !
a. 12 x ( 5 – 2 ) =
....................................................................................................
b. ( 4 + 5 ) + 2 =
....................................................................................................
c. 12 x 35 =
.....................................................................................................
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