Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
262 – 238 =
2
24
|
2.
303 + 492 =
795
2
|
3.
555 + 429 =
2
984
|
4.
553 + 278 =
831
2
|
|
5.
700 + 181 =
881
2
|
6.
117 – 9 =
2
108
|
7.
49 – 12 =
2
37
|
8.
697 + 47 =
2
744
|
|
9.
919 – 226 =
693
2
|
10.
444 – 242 =
2
202
|
11.
146 – 69 =
2
77
|
12.
999 – 727 =
2
272
|
|
13.
244 – 163 =
2
81
|
14.
888 + 93 =
2
981
|
15.
464 + 12 =
2
476
|
16.
287 + 459 =
746
2
|
|
17.
879 + 83 =
2
962
|
18.
421 + 147 =
2
568
|
19.
601 – 4 =
597
2
|
20.
534 – 111 =
423
2
|