Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
214 – 20 =
2
194
|
2.
71 – 21 =
2
50
|
3.
507 + 252 =
2
759
|
4.
588 – 187 =
401
2
|
|
5.
104 + 519 =
623
2
|
6.
31 – 14 =
17
2
|
7.
365 – 330 =
35
2
|
8.
395 + 10 =
405
2
|
|
9.
224 + 649 =
2
873
|
10.
650 + 225 =
2
875
|
11.
751 – 158 =
2
593
|
12.
560 – 413 =
2
147
|
|
13.
374 + 465 =
2
839
|
14.
226 + 359 =
585
2
|
15.
359 – 74 =
2
285
|
16.
524 + 440 =
2
964
|
|
17.
265 – 253 =
1
12
|
18.
356 + 420 =
776
2
|
19.
655 + 18 =
673
2
|
20.
660 – 48 =
2
612
|