Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
635 + 338 =
973
2
|
2.
569 – 166 =
2
403
|
3.
389 – 278 =
2
111
|
4.
782 – 674 =
2
108
|
|
5.
575 + 305 =
2
880
|
6.
158 – 0 =
158
2
|
7.
805 + 162 =
2
967
|
8.
991 + 5 =
2
996
|
|
9.
611 + 149 =
2
760
|
10.
520 – 31 =
2
489
|
11.
53 – 41 =
12
1
|
12.
36 – 21 =
15
1
|
|
13.
633 – 480 =
153
2
|
14.
135 – 19 =
116
2
|
15.
577 – 157 =
420
2
|
16.
357 + 578 =
2
935
|
|
17.
649 + 141 =
790
2
|
18.
349 – 115 =
2
234
|
19.
607 – 219 =
2
388
|
20.
344 – 234 =
2
110
|