Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
477 – 55 =
422
2
|
2.
820 – 154 =
2
666
|
3.
185 – 60 =
125
2
|
4.
118 – 118 =
2
0
|
|
5.
853 – 198 =
655
2
|
6.
70 + 169 =
2
239
|
7.
703 + 16 =
719
2
|
8.
57 + 583 =
2
640
|
|
9.
97 – 73 =
24
2
|
10.
515 + 125 =
640
2
|
11.
513 + 266 =
2
779
|
12.
210 – 68 =
2
142
|
|
13.
899 – 230 =
2
669
|
14.
409 – 187 =
2
222
|
15.
703 – 328 =
375
2
|
16.
406 – 292 =
2
114
|
|
17.
216 + 778 =
994
2
|
18.
519 + 74 =
2
593
|
19.
604 + 380 =
2
984
|
20.
62 + 537 =
599
2
|