Oefen de erbijsom en erafsom tot 100
In de mix
|
1.
30 – 21 =
9
1
|
2.
68 + 4 =
72
2
|
3.
31 + 63 =
94
2
|
4.
61 + 0 =
2
61
|
|
5.
42 + 52 =
2
94
|
6.
76 + 0 =
76
2
|
7.
31 + 4 =
35
2
|
8.
71 + 8 =
2
79
|
|
9.
51 – 38 =
1
13
|
10.
61 – 42 =
19
2
|
11.
17 + 55 =
2
72
|
12.
90 + 9 =
2
99
|
|
13.
7 – 3 =
4
1
|
14.
28 – 27 =
2
1
|
15.
76 + 9 =
2
85
|
16.
96 + 0 =
2
96
|
|
17.
55 – 42 =
13
1
|
18.
92 – 86 =
6
1
|
19.
96 + 4 =
100
2
|
20.
25 – 25 =
0
2
|