Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
312 – 42 =
270
2
|
2.
752 + 44 =
796
2
|
3.
565 – 172 =
393
2
|
4.
778 – 338 =
2
440
|
|
5.
337 – 238 =
99
2
|
6.
490 + 279 =
2
769
|
7.
470 – 196 =
2
274
|
8.
869 + 92 =
2
961
|
|
9.
251 – 9 =
2
242
|
10.
239 + 498 =
2
737
|
11.
688 + 105 =
793
2
|
12.
175 – 41 =
134
2
|
|
13.
864 – 144 =
720
2
|
14.
327 – 110 =
217
2
|
15.
860 + 126 =
986
2
|
16.
979 + 6 =
2
985
|
|
17.
422 – 70 =
2
352
|
18.
626 + 182 =
2
808
|
19.
89 – 33 =
2
56
|
20.
869 – 824 =
45
2
|