Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
120 – 49 =
71
2
|
2.
860 + 107 =
967
2
|
3.
677 + 153 =
2
830
|
4.
783 + 100 =
2
883
|
|
5.
176 + 13 =
2
189
|
6.
290 + 292 =
2
582
|
7.
930 + 68 =
998
2
|
8.
315 – 77 =
2
238
|
|
9.
665 – 181 =
2
484
|
10.
911 – 275 =
636
2
|
11.
131 + 825 =
2
956
|
12.
438 + 20 =
2
458
|
|
13.
733 + 79 =
812
2
|
14.
109 + 180 =
2
289
|
15.
839 – 363 =
476
2
|
16.
16 + 396 =
2
412
|
|
17.
197 – 34 =
163
2
|
18.
274 + 122 =
2
396
|
19.
627 + 91 =
718
2
|
20.
254 – 77 =
2
177
|