Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
860 + 112 =
972
2
|
2.
68 – 68 =
0
2
|
3.
106 – 95 =
11
1
|
4.
68 + 579 =
647
2
|
|
5.
715 – 303 =
412
2
|
6.
947 + 3 =
2
950
|
7.
161 – 139 =
22
2
|
8.
474 – 112 =
362
2
|
|
9.
182 – 72 =
2
110
|
10.
820 + 45 =
865
2
|
11.
999 + 0 =
999
2
|
12.
491 + 240 =
2
731
|
|
13.
806 + 130 =
2
936
|
14.
791 – 768 =
23
2
|
15.
511 – 179 =
2
332
|
16.
298 + 184 =
482
2
|
|
17.
542 + 449 =
2
991
|
18.
237 – 124 =
113
2
|
19.
724 + 57 =
781
2
|
20.
853 – 98 =
755
2
|