Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
624 + 281 =
905
2
|
2.
444 + 352 =
796
2
|
3.
412 – 143 =
269
2
|
4.
91 – 44 =
47
2
|
|
5.
428 – 185 =
243
2
|
6.
166 + 626 =
2
792
|
7.
360 + 67 =
427
2
|
8.
61 – 15 =
46
2
|
|
9.
641 – 210 =
431
2
|
10.
224 – 159 =
65
2
|
11.
904 + 85 =
989
2
|
12.
92 – 80 =
12
1
|
|
13.
18 + 304 =
2
322
|
14.
668 – 623 =
2
45
|
15.
391 – 297 =
2
94
|
16.
224 – 20 =
204
2
|
|
17.
751 – 646 =
2
105
|
18.
826 – 168 =
2
658
|
19.
579 – 439 =
140
2
|
20.
528 + 221 =
749
2
|