Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
848 + 102 =
2
950
|
2.
981 + 13 =
2
994
|
3.
962 + 21 =
2
983
|
4.
817 + 36 =
853
2
|
|
5.
329 + 537 =
866
2
|
6.
958 – 120 =
2
838
|
7.
616 – 513 =
103
2
|
8.
482 + 296 =
778
2
|
|
9.
911 + 74 =
985
2
|
10.
379 + 94 =
2
473
|
11.
776 + 139 =
2
915
|
12.
678 – 402 =
276
2
|
|
13.
383 + 442 =
2
825
|
14.
328 – 145 =
2
183
|
15.
812 – 508 =
304
2
|
16.
669 – 258 =
2
411
|
|
17.
262 – 59 =
2
203
|
18.
739 – 334 =
2
405
|
19.
168 – 109 =
59
2
|
20.
974 – 807 =
167
2
|