Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
964 – 674 =
2
290
|
2.
172 – 37 =
2
135
|
3.
399 – 208 =
2
191
|
4.
566 – 278 =
2
288
|
|
5.
758 + 66 =
824
2
|
6.
583 + 378 =
961
2
|
7.
129 – 69 =
2
60
|
8.
79 + 41 =
120
2
|
|
9.
717 + 265 =
2
982
|
10.
578 + 71 =
2
649
|
11.
483 + 417 =
2
900
|
12.
138 – 76 =
2
62
|
|
13.
984 + 16 =
2
1000
|
14.
708 – 221 =
2
487
|
15.
718 + 126 =
844
2
|
16.
418 + 223 =
641
2
|
|
17.
761 + 35 =
2
796
|
18.
846 + 49 =
895
2
|
19.
916 + 68 =
2
984
|
20.
144 – 113 =
31
2
|