Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
803 – 108 =
2
695
|
2.
262 + 713 =
2
975
|
3.
162 + 412 =
2
574
|
4.
416 – 30 =
2
386
|
|
5.
793 – 755 =
2
38
|
6.
986 + 2 =
988
2
|
7.
884 – 449 =
2
435
|
8.
314 + 436 =
750
2
|
|
9.
992 – 562 =
430
2
|
10.
51 + 777 =
2
828
|
11.
279 + 23 =
302
2
|
12.
204 – 38 =
2
166
|
|
13.
5 + 664 =
669
2
|
14.
778 – 424 =
2
354
|
15.
629 – 509 =
2
120
|
16.
330 – 117 =
213
2
|
|
17.
156 + 681 =
837
2
|
18.
962 – 5 =
957
2
|
19.
829 – 669 =
160
2
|
20.
828 – 672 =
156
2
|