Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
455 + 283 =
738
2
|
2.
192 + 617 =
2
809
|
3.
837 – 795 =
2
42
|
4.
968 + 29 =
997
2
|
|
5.
840 + 118 =
958
2
|
6.
384 + 454 =
838
2
|
7.
107 + 485 =
592
2
|
8.
91 + 607 =
698
2
|
|
9.
26 – 11 =
15
1
|
10.
426 – 315 =
2
111
|
11.
382 – 183 =
199
2
|
12.
97 – 81 =
2
16
|
|
13.
705 – 469 =
2
236
|
14.
717 + 211 =
2
928
|
15.
966 + 1 =
967
2
|
16.
680 – 162 =
2
518
|
|
17.
954 + 30 =
2
984
|
18.
616 – 579 =
37
2
|
19.
901 – 251 =
2
650
|
20.
901 + 55 =
2
956
|