Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
42 – 7 =
35
2
|
2.
657 + 24 =
681
2
|
3.
316 – 133 =
2
183
|
4.
694 – 379 =
2
315
|
|
5.
394 + 129 =
523
2
|
6.
259 – 244 =
1
15
|
7.
58 + 57 =
115
2
|
8.
62 + 905 =
2
967
|
|
9.
41 – 11 =
30
2
|
10.
822 – 449 =
2
373
|
11.
88 + 191 =
279
2
|
12.
897 – 209 =
2
688
|
|
13.
67 + 865 =
932
2
|
14.
675 + 122 =
797
2
|
15.
767 – 310 =
2
457
|
16.
481 – 261 =
2
220
|
|
17.
366 + 186 =
2
552
|
18.
586 + 119 =
705
2
|
19.
185 + 223 =
408
2
|
20.
886 – 159 =
2
727
|