Oefen de erbijsom en erafsom tot 100
In de mix
|
1.
83 + 4 =
87
2
|
2.
20 + 3 =
2
23
|
3.
75 – 21 =
2
54
|
4.
53 – 12 =
2
41
|
|
5.
37 + 29 =
2
66
|
6.
7 + 25 =
2
32
|
7.
17 + 76 =
2
93
|
8.
59 – 49 =
1
10
|
|
9.
71 – 6 =
65
2
|
10.
64 – 21 =
2
43
|
11.
45 – 2 =
2
43
|
12.
91 + 7 =
98
2
|
|
13.
13 + 85 =
98
2
|
14.
29 – 20 =
1
9
|
15.
16 – 9 =
7
1
|
16.
72 + 2 =
2
74
|
|
17.
84 + 15 =
99
2
|
18.
64 + 16 =
80
2
|
19.
4 – 4 =
0
2
|
20.
88 + 1 =
89
2
|