Page 55 - 7. Sınıf Matematik Defterim

ETKİNLİK DEFTERİ 2. ÜNİTE: RASYONEL SAYILAR VE RASYONEL SAYILARLA İŞLEMLER

21. Rasyonel Sayılarda Çarpma İşleminin Özellikleri

Etkinlik Çarpma işleminin özelliklerinden faydalanarak boşlukları doldurunuz.

3 5 3  1 3  2 1 23
a ⋅ = ⋅ l ⋅  +  = ⋅ + ⋅
7 12 7  2 5  3 2 3 5

 15   12   15  3  5  3 7 35
b  −  ⋅−  = ⋅−  m ⋅  + =  ⋅ + ⋅


 17   13   17  8   7   8 11 8 7

 8   4  3    8  3 1  13 8  1 13 1
c     ⋅   = ⋅   ⋅ n ⋅  −  = ⋅ − ⋅
⋅
 19    11 25    19   25 2  5 15  2 5 2

 − 32  2  4 5  2 25
d   ⋅ = 0 o ⋅  −  = − ⋅
 5  3  9 11 3 3 11

123 123  12 3  5 12 5 3
e ⋅ = p ⋅  −  = ⋅ − ⋅
44 44  5 4  8 5 84

2  23 
f ⋅ = 1 q  −  ⋅ = 0
3  44 

19  35  32  35
⋅−
g ⋅ = 1 r    = ⋅
17  23  43  23

2 
 5   4   13  2   3  − 
⋅
⋅−
h  −  ⋅−  = s  ⋅   =    

 4   5   2 7  5    7  5 
48  65  41
i ⋅−  = t ⋅ = 1

65  48  19

125 32 86 11
j ⋅ ⋅ = 0 u ⋅ =
4 5 11 86

 12 4  3
0
⋅−
⋅
k   2 3    7   = v − 2 ⋅=
5
54 7. Sınıf Matematik