Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
375 – 222 =
153
2
|
2.
223 + 737 =
960
2
|
3.
833 + 72 =
905
2
|
4.
980 + 1 =
981
2
|
|
5.
467 + 387 =
2
854
|
6.
847 + 79 =
926
2
|
7.
788 – 749 =
2
39
|
8.
98 + 588 =
686
2
|
|
9.
854 + 123 =
977
2
|
10.
825 – 263 =
2
562
|
11.
239 – 212 =
27
2
|
12.
928 – 444 =
2
484
|
|
13.
536 + 449 =
985
2
|
14.
827 + 39 =
866
2
|
15.
656 – 45 =
611
2
|
16.
54 – 29 =
25
2
|
|
17.
559 + 164 =
2
723
|
18.
505 + 359 =
864
2
|
19.
879 – 162 =
2
717
|
20.
362 + 210 =
572
2
|