Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
925 – 685 =
2
240
|
2.
331 + 434 =
765
2
|
3.
783 + 11 =
2
794
|
4.
148 + 740 =
2
888
|
|
5.
238 – 106 =
2
132
|
6.
633 + 275 =
908
2
|
7.
76 – 18 =
2
58
|
8.
83 – 38 =
2
45
|
|
9.
408 + 559 =
2
967
|
10.
293 + 366 =
659
2
|
11.
26 + 627 =
2
653
|
12.
252 + 596 =
848
2
|
|
13.
5 + 691 =
696
2
|
14.
528 – 262 =
266
2
|
15.
485 + 185 =
670
2
|
16.
708 + 204 =
2
912
|
|
17.
85 – 20 =
65
2
|
18.
749 + 60 =
2
809
|
19.
252 – 16 =
236
2
|
20.
937 – 379 =
2
558
|