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Introduction

Maak de sommen.


Question

1
70 - 10 =

Question

2
60 + 30 =

Question

3
40 + 40 =

Question

4
13 - 12 =

Question

5
20 - 7 =

Question

6
2 + 6 =
12 + 6 =

Question

7
40 + 1 =

Question

8
16 - 8 =

Question

9
8 + 1 =
18 + 1 =

Question

10
60 - 30 =