Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
921 – 546 =
375
2
|
2.
792 – 652 =
140
2
|
3.
816 + 31 =
2
847
|
4.
372 + 576 =
948
2
|
|
5.
530 – 449 =
81
2
|
6.
336 – 182 =
2
154
|
7.
265 + 485 =
2
750
|
8.
441 – 414 =
2
27
|
|
9.
56 – 1 =
55
2
|
10.
109 – 13 =
96
2
|
11.
856 – 653 =
203
2
|
12.
753 + 149 =
902
2
|
|
13.
21 + 414 =
435
2
|
14.
587 + 200 =
787
2
|
15.
282 + 518 =
800
2
|
16.
105 + 836 =
2
941
|
|
17.
51 – 3 =
48
2
|
18.
38 + 421 =
2
459
|
19.
382 – 90 =
2
292
|
20.
87 + 873 =
960
2
|