Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
12 + 89 =
101
2
|
2.
172 – 144 =
2
28
|
3.
246 – 104 =
2
142
|
4.
330 + 437 =
767
2
|
|
5.
94 – 30 =
64
2
|
6.
146 – 144 =
1
2
|
7.
449 + 516 =
2
965
|
8.
50 – 18 =
32
2
|
|
9.
786 + 70 =
856
2
|
10.
610 – 566 =
44
2
|
11.
766 + 82 =
2
848
|
12.
134 + 94 =
228
2
|
|
13.
567 + 287 =
854
2
|
14.
450 – 44 =
406
2
|
15.
637 – 158 =
479
2
|
16.
476 – 279 =
197
2
|
|
17.
752 – 223 =
2
529
|
18.
73 + 210 =
283
2
|
19.
560 – 137 =
423
2
|
20.
462 – 195 =
2
267
|