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Aktiviteter 5

5.1)

Regn ut og forkort så mye som mulig.

a)
3 ⋅ 4 6
b)
5 ⋅ 3 5
c)
6 ⋅ 4 12
d)
2 ⋅ 9 3
e)
8 4 ⋅ 5
f)
4 3 ⋅ 12
g)
4 6 ⋅ 9
h)
14 8 ⋅ 4

a)
3 ⋅ 4 6
b)
5 ⋅ 3 5
c)
6 ⋅ 4 12
d)
2 ⋅ 9 3
e)
8 4 ⋅ 5
f)
4 3 ⋅ 12
g)
4 6 ⋅ 9
h)
14 8 ⋅ 4

5.2)

Regn ut og forkort så mye som mulig.

a)
3 5 ⋅ 2 3
b)
2 7 ⋅ 1 2
c)
1 2 ⋅ 1 3
d)
5 2 ⋅ 2 5
e)
6 11 ⋅ 2 3
f)
5 8 ⋅ 9 2
g)
6 4 ⋅ 2 4
h)
10 13 ⋅ 1 4
i)
4 9 ⋅ 6 8
j)
20 25 ⋅ 5 2

a)
3 5 ⋅ 2 3
b)
2 7 ⋅ 1 2
c)
1 2 ⋅ 1 3
d)
5 2 ⋅ 2 5
e)
6 11 ⋅ 2 3
f)
5 8 ⋅ 9 2
g)
6 4 ⋅ 2 4
h)
10 13 ⋅ 1 4
i)
4 9 ⋅ 6 8
j)
20 25 ⋅ 5 2

5.3)

Forkort så mye som mulig (Hint: Primtallsfaktoriser).

a)
16 7 ⋅ 21 256
b)
15 9 ⋅ 27 40
c)
13 18 ⋅ 36 26
d)
24 85 ⋅ 51 42
e)
56 57 ⋅ 38 24
f)
24 1440 ⋅ 360 3 ⋅ 336 360
g)
2 5 ⋅ 5 3 ⋅ 3 7 ⋅ 7 2
h)
11 12 ⋅ 3 7 ⋅ 7 11 ⋅ 12 3
i)
6 8 ⋅ 9 10 ⋅ 10 12 ⋅ 16 20
j)
22 5 ⋅ 1 7 ⋅ 1 11 ⋅ 1 3
k)
2 7 ⋅ 3 8 ⋅ 3 10 ⋅ 4 6
l)
4 3 ⋅ 2 6 ⋅ 10 3 ⋅ 11 9

a)
16 7 ⋅ 21 256
b)
15 9 ⋅ 27 40
c)
13 18 ⋅ 36 26
d)
24 85 ⋅ 51 42
e)
56 57 ⋅ 38 24
f)
24 1440 ⋅ 360 3 ⋅ 336 360
g)
2 5 ⋅ 5 3 ⋅ 3 7 ⋅ 7 2
h)
11 12 ⋅ 3 7 ⋅ 7 11 ⋅ 12 3
i)
6 8 ⋅ 9 10 ⋅ 10 12 ⋅ 16 20
j)
22 5 ⋅ 1 7 ⋅ 1 11 ⋅ 1 3
k)
2 7 ⋅ 3 8 ⋅ 3 10 ⋅ 4 6
l)
4 3 ⋅ 2 6 ⋅ 10 3 ⋅ 11 9

Du kan finne fasit her.

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