Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
91 – 76 =
1
15
|
2.
836 + 75 =
911
2
|
3.
799 + 122 =
2
921
|
4.
231 – 105 =
2
126
|
|
5.
744 + 181 =
2
925
|
6.
140 – 52 =
88
2
|
7.
961 – 228 =
733
2
|
8.
498 + 111 =
609
2
|
|
9.
965 – 559 =
406
2
|
10.
812 + 104 =
2
916
|
11.
154 + 502 =
2
656
|
12.
380 + 604 =
984
2
|
|
13.
13 – 0 =
13
1
|
14.
374 – 165 =
209
2
|
15.
512 + 200 =
2
712
|
16.
971 – 847 =
124
2
|
|
17.
586 + 258 =
2
844
|
18.
719 – 369 =
2
350
|
19.
130 – 79 =
2
51
|
20.
606 + 264 =
870
2
|