Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
868 + 24 =
892
2
|
2.
682 – 178 =
504
2
|
3.
598 – 40 =
558
2
|
4.
126 – 94 =
32
2
|
|
5.
810 + 52 =
2
862
|
6.
53 – 11 =
42
2
|
7.
108 + 375 =
483
2
|
8.
825 – 723 =
102
2
|
|
9.
893 – 506 =
2
387
|
10.
886 + 25 =
2
911
|
11.
72 – 8 =
2
64
|
12.
138 + 211 =
2
349
|
|
13.
193 – 52 =
141
2
|
14.
509 – 412 =
2
97
|
15.
991 + 1 =
992
2
|
16.
622 – 257 =
365
2
|
|
17.
23 + 7 =
2
30
|
18.
203 – 25 =
2
178
|
19.
881 – 516 =
365
2
|
20.
357 + 98 =
2
455
|