Rekensommen met erbij en eraf tot 1.000
In de mix
|
1.
508 – 379 =
2
129
|
2.
504 – 503 =
2
1
|
3.
749 + 76 =
2
825
|
4.
894 – 567 =
2
327
|
|
5.
577 + 240 =
2
817
|
6.
523 + 114 =
637
2
|
7.
166 – 146 =
2
20
|
8.
274 + 272 =
2
546
|
|
9.
220 + 233 =
453
2
|
10.
241 + 678 =
919
2
|
11.
416 – 131 =
285
2
|
12.
377 – 320 =
2
57
|
|
13.
382 + 601 =
983
2
|
14.
228 – 100 =
2
128
|
15.
950 + 37 =
2
987
|
16.
308 – 107 =
2
201
|
|
17.
280 + 264 =
544
2
|
18.
473 – 297 =
176
2
|
19.
319 – 175 =
144
2
|
20.
546 + 275 =
821
2
|