Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
509 – 134 =
375
2
|
2.
641 + 4 =
645
2
|
3.
797 + 111 =
2
908
|
4.
313 – 32 =
2
281
|
|
5.
766 – 518 =
2
248
|
6.
48 + 757 =
805
2
|
7.
133 + 19 =
2
152
|
8.
57 + 155 =
2
212
|
|
9.
7 – 0 =
7
1
|
10.
900 + 11 =
911
2
|
11.
780 + 147 =
927
2
|
12.
118 – 5 =
113
2
|
|
13.
907 – 602 =
305
2
|
14.
176 + 653 =
829
2
|
15.
122 + 685 =
807
2
|
16.
589 + 280 =
869
2
|
|
17.
108 + 758 =
2
866
|
18.
510 – 204 =
306
2
|
19.
693 + 90 =
783
2
|
20.
471 – 180 =
291
2
|