Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
277 + 146 =
2
423
|
2.
110 – 72 =
2
38
|
3.
378 – 290 =
88
2
|
4.
844 + 17 =
861
2
|
|
5.
461 + 99 =
2
560
|
6.
946 + 4 =
2
950
|
7.
219 – 52 =
167
2
|
8.
935 – 28 =
2
907
|
|
9.
589 + 274 =
2
863
|
10.
493 – 371 =
122
2
|
11.
608 – 24 =
584
2
|
12.
999 + 1 =
1000
2
|
|
13.
491 – 471 =
2
20
|
14.
777 + 159 =
936
2
|
15.
931 – 268 =
663
2
|
16.
294 + 95 =
389
2
|
|
17.
855 – 232 =
623
2
|
18.
936 + 10 =
2
946
|
19.
18 – 13 =
5
1
|
20.
860 + 22 =
2
882
|