Zatikiei buruzko ariketa oinarrizkoak

1. Ariketen soluzioak:
142. 12
2 1 20 20 1 5 1 18 9 5 1
a) = b) = = c) = d) = e) =
4 2 60 60 3 15 3 22 11 25 5
6 2 21 3 22 2
f) = g) = h) =
27 9 28 4 33 3
14
3 6 30 9 18
a) = 3·x=5·6 x= = 10 b) =  18 · x = 9 · 8
5 x 3 x 8
72 5 2 30
 x= = 4 c) =  2 · x = 5 · 6  x = = 15
18 x 6 2
x 15 150
d) =  x · 50 = 10 · 15  x = =3
10 50 50
143. 20
4 4
Anek  €  4 5
5 5
Maiderrek  0’ 75 € 0 ‘ 8 > 0 ‘ 75
Zein da garestiena? Anerena garestiagoa da
34
3 5 3 2
atera  − = geratzen dira eta zati hau  14 €
5 5 5 5
1 5
14 € geratzen dira  14 : 2 = 7 €  guztia ( ) 7 · 5 = 35 €
5 5
155. 5
1 4 3 5 13 11 17 11
a) + b) + c) − d) −
10 15 8 12 12 18 20 30
3 8 9 10 39 22 51 22
+ + − −
30 30 24 24 36 36 60 60
11 19 17 29
30 24 36 60
23 19 15 10
e) − f) +
20 30 28 21
69 38 45 40
− +
60 60 84 84
31 85
60 84
9
1 4 1 4 1 5 6 5 30 5 4 4 9 36
a) 4 ⋅ = ⋅ = = b) 6· = · = = c) ·9 = · = = 12
8 1 8 8 2 12 1 12 12 2 3 31 3

2. 2 3 2 6 2 5 5 12 60 4 4 3 12 4
d) 3· = · = = e) ·12 = · = = 10 f) ·3 = · = =
15 1 15 15 5 6 6 1 6 9 91 9 3
11
5 1 5 6 3 1 3 8 1 1 3 1
a) 1:= : = b) 1: = : = c) :3 = : =
6 1 6 5 8 1 8 3 3 3 1 9
3 5 3 20 6 3 6 15 5 4 4 8 4 1
d) 5: = : = e) 3: = : = = f) :8 = : = =
4 1 4 3 5 1 5 6 2 5 5 1 40 10
156. 15
1  1 1 1 1 1  4 5 1  2 3
a) · +  b) : −  c) 2· −  d) : − 
5  2 3 4  2 4  3 6 10  3 5 
1  3 2 1 2 1 8 5 1  10 9 
· +  : −  2· −  : − 
5 6 6 4  4 4 6 6 10  15 15 
15 6 1 1 1 4 3 6 1 1 15 3
· = = : = =1 2· = = 1 : = =
5 6 30 6 4 4 4 6 6 10 15 10 2
3 1 1 7 1 2
e) · −  f) :  + 
4 3 9 9 6 9
3 3 1 7 3 4
· −  : + 
4 9 9 9  18 18 
3 2  3·2  7 7  7·2·9 
· :
4 9  2·2·3·3 
  9 18  9·7 
 
6 1 126 42
= = =2
36 6 63 21
157. 25
Datu Taula
1 1 1 2 3 6 4 13
1. astea  + + = + + =
6 6 3 9 18 18 18 18
1
2. astea 
3
2 18 13 5
3. astea  − = geratzen zaio
9 18 18 18
Zer ZATI geratzen zaio?
31
Datu Taula
2 2 1 21 2 1
Gauez  en  · = =
5 5 4 5 4 20 10
Manenimenduan
1
Aurrekoaren
4
Zer ZATI mantenimenduan?