Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
218 + 337 =
555
2
|
2.
43 – 10 =
33
2
|
3.
864 + 89 =
953
2
|
4.
39 – 24 =
15
1
|
|
5.
43 – 15 =
28
2
|
6.
856 + 123 =
2
979
|
7.
310 – 244 =
66
2
|
8.
931 – 701 =
2
230
|
|
9.
147 + 246 =
2
393
|
10.
337 + 149 =
486
2
|
11.
68 – 33 =
35
2
|
12.
630 + 112 =
742
2
|
|
13.
47 – 7 =
2
40
|
14.
832 + 43 =
2
875
|
15.
915 – 458 =
2
457
|
16.
580 + 115 =
695
2
|
|
17.
390 – 381 =
9
1
|
18.
80 – 20 =
2
60
|
19.
368 – 89 =
2
279
|
20.
215 + 206 =
2
421
|