Oefen de erbijsom en erafsom tot 100
In de mix
|
1.
50 + 18 =
68
2
|
2.
75 – 51 =
24
2
|
3.
39 – 35 =
1
4
|
4.
34 + 34 =
2
68
|
|
5.
2 – 2 =
2
0
|
6.
33 – 10 =
23
2
|
7.
70 – 69 =
1
2
|
8.
35 + 8 =
43
2
|
|
9.
15 – 7 =
1
8
|
10.
28 – 21 =
1
7
|
11.
99 + 0 =
99
2
|
12.
82 – 26 =
56
2
|
|
13.
98 – 49 =
2
49
|
14.
18 – 16 =
2
1
|
15.
53 – 28 =
2
25
|
16.
39 – 24 =
1
15
|
|
17.
17 – 17 =
0
2
|
18.
6 – 3 =
3
1
|
19.
75 – 12 =
63
2
|
20.
79 – 36 =
43
2
|