Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
290 – 274 =
16
2
|
2.
817 + 150 =
967
2
|
3.
161 – 158 =
3
1
|
4.
826 + 142 =
2
968
|
|
5.
727 + 11 =
2
738
|
6.
261 – 103 =
158
2
|
7.
855 + 106 =
961
2
|
8.
775 + 222 =
2
997
|
|
9.
494 + 421 =
2
915
|
10.
601 – 241 =
360
2
|
11.
652 – 264 =
388
2
|
12.
167 + 64 =
2
231
|
|
13.
957 – 65 =
2
892
|
14.
123 + 197 =
2
320
|
15.
447 + 335 =
782
2
|
16.
883 – 765 =
2
118
|
|
17.
959 + 39 =
2
998
|
18.
267 – 80 =
2
187
|
19.
627 – 132 =
495
2
|
20.
964 – 509 =
455
2
|