Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
320 – 25 =
295
2
|
2.
217 + 726 =
943
2
|
3.
939 + 23 =
2
962
|
4.
647 + 88 =
2
735
|
|
5.
837 + 123 =
960
2
|
6.
989 + 11 =
1000
2
|
7.
116 + 250 =
366
2
|
8.
344 – 78 =
266
2
|
|
9.
909 – 497 =
2
412
|
10.
965 + 2 =
967
2
|
11.
291 + 43 =
334
2
|
12.
685 + 74 =
759
2
|
|
13.
716 – 104 =
2
612
|
14.
459 – 380 =
2
79
|
15.
494 + 469 =
963
2
|
16.
776 – 603 =
2
173
|
|
17.
977 – 238 =
2
739
|
18.
878 – 545 =
333
2
|
19.
247 + 430 =
677
2
|
20.
517 – 101 =
2
416
|