Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
810 – 452 =
2
358
|
2.
153 + 76 =
229
2
|
3.
854 – 6 =
2
848
|
4.
210 – 194 =
16
2
|
|
5.
671 – 334 =
337
2
|
6.
838 + 126 =
964
2
|
7.
669 + 37 =
2
706
|
8.
747 + 61 =
2
808
|
|
9.
657 + 310 =
2
967
|
10.
241 – 155 =
86
2
|
11.
579 + 108 =
687
2
|
12.
216 + 320 =
2
536
|
|
13.
98 + 683 =
2
781
|
14.
486 – 61 =
425
2
|
15.
997 – 855 =
2
142
|
16.
256 + 448 =
704
2
|
|
17.
273 – 21 =
252
2
|
18.
949 + 13 =
962
2
|
19.
472 + 159 =
2
631
|
20.
775 + 135 =
910
2
|