Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
631 – 615 =
2
16
|
2.
302 – 274 =
2
28
|
3.
400 + 540 =
2
940
|
4.
346 + 542 =
2
888
|
|
5.
188 – 146 =
42
2
|
6.
681 – 324 =
357
2
|
7.
893 + 42 =
2
935
|
8.
214 – 184 =
30
2
|
|
9.
936 – 913 =
23
2
|
10.
974 + 26 =
1000
2
|
11.
297 – 241 =
56
2
|
12.
922 – 694 =
228
2
|
|
13.
771 + 15 =
786
2
|
14.
29 + 920 =
2
949
|
15.
414 + 6 =
2
420
|
16.
902 + 34 =
936
2
|
|
17.
943 + 10 =
953
2
|
18.
939 + 38 =
2
977
|
19.
954 – 784 =
2
170
|
20.
142 – 48 =
94
2
|