Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
957 – 698 =
2
259
|
2.
488 – 58 =
2
430
|
3.
532 + 358 =
2
890
|
4.
834 + 113 =
2
947
|
|
5.
15 – 9 =
6
1
|
6.
892 – 34 =
2
858
|
7.
737 + 166 =
903
2
|
8.
959 – 770 =
189
2
|
|
9.
995 – 916 =
79
2
|
10.
173 – 88 =
85
2
|
11.
998 – 662 =
336
2
|
12.
760 + 8 =
768
2
|
|
13.
202 – 75 =
2
127
|
14.
877 – 62 =
815
2
|
15.
944 – 458 =
486
2
|
16.
828 – 277 =
551
2
|
|
17.
616 + 313 =
2
929
|
18.
270 – 106 =
164
2
|
19.
753 + 227 =
2
980
|
20.
266 + 550 =
2
816
|