Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
653 – 495 =
158
2
|
2.
675 + 190 =
865
2
|
3.
390 + 185 =
575
2
|
4.
989 + 8 =
2
997
|
|
5.
382 + 336 =
2
718
|
6.
243 + 543 =
786
2
|
7.
797 – 518 =
279
2
|
8.
140 – 23 =
2
117
|
|
9.
551 + 439 =
2
990
|
10.
127 – 53 =
74
2
|
11.
957 – 352 =
2
605
|
12.
189 + 198 =
2
387
|
|
13.
591 – 355 =
2
236
|
14.
950 – 481 =
469
2
|
15.
890 + 47 =
2
937
|
16.
674 – 271 =
2
403
|
|
17.
994 + 5 =
999
2
|
18.
866 – 478 =
388
2
|
19.
635 + 2 =
2
637
|
20.
695 – 216 =
479
2
|