Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
910 – 171 =
2
739
|
2.
808 – 624 =
184
2
|
3.
519 + 215 =
2
734
|
4.
793 – 42 =
2
751
|
|
5.
453 – 351 =
102
2
|
6.
112 + 664 =
2
776
|
7.
706 + 7 =
2
713
|
8.
290 – 279 =
11
1
|
|
9.
985 – 659 =
2
326
|
10.
719 + 207 =
2
926
|
11.
828 – 80 =
748
2
|
12.
503 – 322 =
181
2
|
|
13.
328 – 44 =
2
284
|
14.
430 + 536 =
966
2
|
15.
66 + 595 =
2
661
|
16.
608 + 60 =
668
2
|
|
17.
563 + 24 =
2
587
|
18.
796 – 384 =
2
412
|
19.
258 – 13 =
2
245
|
20.
943 – 71 =
2
872
|