Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
911 + 47 =
958
2
|
2.
960 + 23 =
2
983
|
3.
548 + 111 =
2
659
|
4.
725 + 50 =
775
2
|
|
5.
175 – 112 =
2
63
|
6.
41 – 40 =
2
1
|
7.
791 – 11 =
780
2
|
8.
332 – 211 =
121
2
|
|
9.
719 + 164 =
883
2
|
10.
630 + 79 =
709
2
|
11.
64 – 14 =
2
50
|
12.
590 – 166 =
424
2
|
|
13.
916 – 221 =
2
695
|
14.
57 – 52 =
1
5
|
15.
227 + 517 =
2
744
|
16.
384 + 102 =
486
2
|
|
17.
738 + 135 =
873
2
|
18.
356 + 24 =
2
380
|
19.
977 + 4 =
981
2
|
20.
80 – 44 =
36
2
|