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Introduction

Maak de sommen.


Question

1
8 + 1 =
18 + 1 =

Question

2
40 + 6 =

Question

3
19 - 12 =

Question

4
7 + 1 =
17 + 1 =

Question

5
60 - 50 =

Question

6
13 - 8 =

Question

7
50 - 20 =

Question

8
80 + 10 =

Question

9
10 + 90 =

Question

10
18 - 9 =