Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
957 – 335 =
2
622
|
2.
18 + 107 =
125
2
|
3.
408 – 44 =
2
364
|
4.
331 + 45 =
2
376
|
|
5.
342 – 233 =
2
109
|
6.
621 + 22 =
643
2
|
7.
288 – 66 =
222
2
|
8.
439 + 515 =
2
954
|
|
9.
180 – 113 =
67
2
|
10.
604 + 93 =
697
2
|
11.
605 + 79 =
2
684
|
12.
173 + 756 =
929
2
|
|
13.
99 + 345 =
444
2
|
14.
104 + 832 =
2
936
|
15.
352 + 416 =
2
768
|
16.
615 – 164 =
2
451
|
|
17.
882 + 96 =
2
978
|
18.
384 + 562 =
2
946
|
19.
496 + 413 =
2
909
|
20.
32 – 2 =
30
2
|