Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
255 – 61 =
2
194
|
2.
221 + 747 =
2
968
|
3.
867 – 461 =
2
406
|
4.
463 + 71 =
2
534
|
|
5.
620 – 382 =
2
238
|
6.
272 – 102 =
170
2
|
7.
833 + 151 =
984
2
|
8.
948 – 136 =
2
812
|
|
9.
226 – 34 =
2
192
|
10.
86 + 736 =
2
822
|
11.
165 + 403 =
568
2
|
12.
85 – 21 =
2
64
|
|
13.
793 + 45 =
838
2
|
14.
785 + 208 =
2
993
|
15.
733 + 203 =
936
2
|
16.
24 – 1 =
2
23
|
|
17.
741 + 147 =
888
2
|
18.
446 – 314 =
132
2
|
19.
135 + 409 =
2
544
|
20.
902 + 57 =
2
959
|