x + 4 = 8 / x
x + 3 = 4 / x
x + 16 = 18 / x
x + 6 = 13 / x
x + 5 = 10 / x
x + 11 = 15 / x

LIGNINGER 1.

x + 8 = 9 / x
x + 4 = 7 / x
x + 5 = 14 / x
x + 3 = 6 / x
x + 7 = 9 / x
x + 7 = 14 / x
x + 18 = 25 / x
x + 14 = 25 / x
x + 8 = 10 / x
x + 3 = 60 / x
x + 5 = 80 / x
x + 20 = 27 / x
x +7 = 100 / x
x + 9 = 17 / x
4 + x = 45 / x
x + 2 = 200 / x
18 = x + 15 / x
x + 21 = 27 / x
x + 3 = 56 / x
x + 7 = 8 / x
x + 1 = 19 / x
x + 20 = 50 / x
x + 200 = 270 / x
46 + x = 48 / x

FACITLISTE. Ligninger 1

x + 4 = 8 / x / 4
x + 3 = 4 / x / 1
x + 16 = 18 / x / 2
x + 6 = 13 / x / 7
x + 5 = 10 / x / 5
x + 11 = 15 / x / 4
x + 8 = 9 / x / 1
x + 4 = 7 / x / 3
x + 5 = 14 / x / 9
x + 3 = 6 / x / 3
x + 7 = 9 / x / 2
x + 7 = 14 / x 7
x + 18 = 25 / x / 7
x + 14 = 25 / x / 9
x + 8 = 10 / x / 2
x + 3 = 60 / x / 57
x + 5 = 80 / x / 75
x + 20 = 27 / x / 7
x +7 = 100 / x / 93
x + 9 = 17 / x / 8
4 + x = 45 / x / 41
x + 2 = 200 / x / 198
18 = x + 15 / x / 3
x + 21 = 27 / x / 6
x + 3 = 56 / x / 53
x + 7 = 8 / x / 1
x + 1 = 19 / x / 18
x + 20 = 50 / x / 30
x + 200 = 270 / x / 70
46 + x = 48 / x 2

Ligninger 1. Ekstra. Regn selv efter på lommeregner.

x + 4 = 800 / x
x + 3 = 400 / x
x + 16 = 180 / x
x + 6 = 130 / x
x + 5 = 100 / x
x + 11 = 150 / x
x + 8 = 900 / x
x + 4 = 700 / x
x + 5 = 140 / x
x + 3 = 60 / x
x + 7 = 90 / x
x + 70 = 140 / x
x + 18 = 250 / x
x + 14 = 250 / x
x + 8 = 100 / x
x + 3 = 609 / x
x + 5 = 808 / x
x + 20 = 277 / x
x +70 = 100 / x
x + 90 = 170 / x
4 + x = 450 / x
x + 20 = 200 / x
18 = x + 150 / x
x + 21 = 270 / x
x + 37 = 569 / x
x + 78 = 888 / x
x + 18 = 198 / x
x + 206 = 508 / x
x + 2007 = 2708 / x
468 + x = 8748 / x
LIGNINGER 1 Lektie
x + 5 = 8 / x
x + 3 = 4 / x
x + 6 = 8 / x
x + 6 = 10 / x
x + 7 = 10 / x
x + 1 = 15 / x
x + 4 = 9 / x
x + 1 = 7 / x
x + 4 = 14 / x
x + 2 = 6 / x
x + 6 = 9 / x
x + 7 = 13 / x
x + 8 = 9 / x
x + 4 = 10 / x
x + 8 = 10 / x
x + 3 = 6 / x
x + 5 = 13 / x
x + 20 = 27 / x
x +10 = 100 / x
x + 9 = 19 / x
4 + x = 84 / x
x + 2 = 102 / x
18 = x + 17 / x
x + 21 = 26 / x
x + 3 = 15 / x
x + 7 = 18 / x
x + 1 = 100 / x
x + 20 = 80 / x
x + 200 = 230 / x
46 + x = 47 / x