Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
746 + 134 =
880
2
|
2.
536 + 348 =
2
884
|
3.
210 – 144 =
66
2
|
4.
766 – 590 =
2
176
|
|
5.
492 + 3 =
2
495
|
6.
528 – 454 =
2
74
|
7.
541 + 74 =
2
615
|
8.
415 – 161 =
254
2
|
|
9.
814 + 21 =
835
2
|
10.
862 – 265 =
2
597
|
11.
494 – 191 =
2
303
|
12.
850 + 62 =
912
2
|
|
13.
321 + 426 =
747
2
|
14.
101 – 27 =
74
2
|
15.
265 – 84 =
2
181
|
16.
180 + 126 =
306
2
|
|
17.
350 – 310 =
2
40
|
18.
484 + 476 =
960
2
|
19.
176 + 545 =
721
2
|
20.
57 + 751 =
808
2
|