Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
59 + 737 =
796
2
|
2.
945 + 25 =
2
970
|
3.
939 – 670 =
269
2
|
4.
802 + 195 =
2
997
|
|
5.
234 – 205 =
29
2
|
6.
289 – 10 =
279
2
|
7.
604 – 472 =
2
132
|
8.
859 + 57 =
2
916
|
|
9.
180 – 101 =
2
79
|
10.
378 + 143 =
521
2
|
11.
378 + 593 =
2
971
|
12.
9 – 1 =
8
1
|
|
13.
56 + 344 =
400
2
|
14.
158 + 654 =
2
812
|
15.
349 – 286 =
63
2
|
16.
32 – 17 =
15
1
|
|
17.
221 + 380 =
601
2
|
18.
173 – 33 =
2
140
|
19.
242 – 42 =
2
200
|
20.
962 + 31 =
993
2
|