Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
332 + 215 =
2
547
|
2.
451 + 418 =
869
2
|
3.
991 + 3 =
994
2
|
4.
573 – 220 =
2
353
|
|
5.
464 – 460 =
4
1
|
6.
680 + 116 =
2
796
|
7.
539 + 120 =
2
659
|
8.
617 – 35 =
2
582
|
|
9.
543 – 23 =
520
2
|
10.
985 – 587 =
398
2
|
11.
48 + 61 =
109
2
|
12.
849 + 14 =
2
863
|
|
13.
661 + 61 =
722
2
|
14.
68 + 27 =
95
2
|
15.
116 + 254 =
370
2
|
16.
255 + 643 =
898
2
|
|
17.
906 – 592 =
2
314
|
18.
443 + 306 =
2
749
|
19.
336 – 263 =
73
2
|
20.
598 – 191 =
2
407
|