Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
422 + 353 =
775
2
|
2.
80 – 16 =
2
64
|
3.
697 – 309 =
388
2
|
4.
113 – 73 =
40
2
|
|
5.
4 – 2 =
1
2
|
6.
38 – 23 =
15
1
|
7.
86 + 815 =
2
901
|
8.
543 – 109 =
434
2
|
|
9.
117 + 368 =
2
485
|
10.
789 + 69 =
858
2
|
11.
713 – 533 =
180
2
|
12.
929 – 653 =
2
276
|
|
13.
169 – 97 =
72
2
|
14.
946 – 274 =
2
672
|
15.
979 + 17 =
2
996
|
16.
537 – 424 =
2
113
|
|
17.
745 – 109 =
2
636
|
18.
75 – 24 =
2
51
|
19.
666 – 340 =
326
2
|
20.
697 – 480 =
217
2
|