Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
915 – 58 =
857
2
|
2.
687 + 63 =
750
2
|
3.
702 – 482 =
220
2
|
4.
411 – 291 =
120
2
|
|
5.
921 – 43 =
2
878
|
6.
812 – 227 =
585
2
|
7.
482 + 276 =
758
2
|
8.
349 + 405 =
754
2
|
|
9.
20 + 74 =
2
94
|
10.
80 + 777 =
857
2
|
11.
979 + 5 =
984
2
|
12.
207 + 724 =
2
931
|
|
13.
839 – 520 =
319
2
|
14.
116 + 488 =
604
2
|
15.
341 – 265 =
76
2
|
16.
529 + 3 =
2
532
|
|
17.
874 + 43 =
2
917
|
18.
108 – 48 =
2
60
|
19.
830 – 272 =
2
558
|
20.
589 + 162 =
2
751
|