Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
136 – 19 =
117
2
|
2.
270 + 120 =
390
2
|
3.
132 – 12 =
2
120
|
4.
549 – 252 =
2
297
|
|
5.
335 + 374 =
2
709
|
6.
656 + 164 =
820
2
|
7.
717 – 388 =
2
329
|
8.
585 + 189 =
2
774
|
|
9.
423 – 76 =
347
2
|
10.
202 + 609 =
811
2
|
11.
345 – 312 =
33
2
|
12.
57 – 8 =
49
2
|
|
13.
607 + 242 =
2
849
|
14.
793 + 125 =
918
2
|
15.
920 – 760 =
160
2
|
16.
873 + 105 =
2
978
|
|
17.
108 – 42 =
66
2
|
18.
631 – 270 =
2
361
|
19.
758 + 37 =
2
795
|
20.
74 – 41 =
33
2
|