Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
9 + 725 =
734
2
|
2.
245 – 78 =
2
167
|
3.
20 + 386 =
406
2
|
4.
992 + 7 =
2
999
|
|
5.
251 + 401 =
652
2
|
6.
874 + 64 =
938
2
|
7.
645 – 361 =
2
284
|
8.
849 + 116 =
965
2
|
|
9.
16 – 1 =
15
1
|
10.
531 – 42 =
2
489
|
11.
357 – 101 =
256
2
|
12.
119 + 526 =
2
645
|
|
13.
607 – 576 =
31
2
|
14.
540 – 498 =
2
42
|
15.
741 + 169 =
910
2
|
16.
876 + 122 =
2
998
|
|
17.
383 – 276 =
107
2
|
18.
122 + 653 =
2
775
|
19.
169 + 422 =
2
591
|
20.
730 – 492 =
2
238
|