Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
894 + 45 =
939
2
|
2.
397 – 375 =
2
22
|
3.
884 + 64 =
2
948
|
4.
651 + 262 =
913
2
|
|
5.
713 + 141 =
854
2
|
6.
268 + 87 =
355
2
|
7.
140 + 540 =
680
2
|
8.
360 + 181 =
2
541
|
|
9.
110 – 87 =
23
2
|
10.
805 – 674 =
131
2
|
11.
323 – 168 =
2
155
|
12.
57 – 43 =
1
14
|
|
13.
564 – 409 =
155
2
|
14.
317 – 310 =
7
1
|
15.
727 – 39 =
688
2
|
16.
128 + 579 =
2
707
|
|
17.
798 – 474 =
324
2
|
18.
44 + 441 =
485
2
|
19.
186 + 451 =
2
637
|
20.
636 – 308 =
2
328
|