Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
802 – 431 =
2
371
|
2.
545 + 29 =
2
574
|
3.
695 + 271 =
966
2
|
4.
620 – 231 =
2
389
|
|
5.
414 – 15 =
399
2
|
6.
831 – 258 =
2
573
|
7.
455 – 5 =
2
450
|
8.
185 + 312 =
497
2
|
|
9.
279 + 205 =
2
484
|
10.
823 – 714 =
2
109
|
11.
750 + 238 =
2
988
|
12.
756 + 176 =
2
932
|
|
13.
955 + 41 =
2
996
|
14.
876 + 47 =
923
2
|
15.
82 + 842 =
2
924
|
16.
533 – 7 =
526
2
|
|
17.
848 + 24 =
2
872
|
18.
148 – 132 =
2
16
|
19.
582 – 170 =
2
412
|
20.
346 + 111 =
457
2
|