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Introduction

Maak de sommen.


Question

1
50 - 10 =

Question

2
18 - 9 =

Question

3
20 + 7 =

Question

4
4 + 5 =
14 + 5 =

Question

5
30 + 30 =

Question

6
80 + 10 =

Question

7
18 - 12 =

Question

8
70 - 10 =

Question

9
6 + 3 =
16 + 3 =

Question

10
11 - 9 =