Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
953 – 406 =
2
547
|
2.
660 – 94 =
566
2
|
3.
135 – 47 =
2
88
|
4.
185 – 183 =
2
1
|
|
5.
294 + 296 =
590
2
|
6.
527 + 266 =
2
793
|
7.
110 – 3 =
107
2
|
8.
830 + 20 =
850
2
|
|
9.
629 – 6 =
2
623
|
10.
746 + 253 =
999
2
|
11.
247 + 366 =
613
2
|
12.
494 – 208 =
286
2
|
|
13.
500 – 418 =
82
2
|
14.
85 + 753 =
2
838
|
15.
424 + 74 =
2
498
|
16.
868 + 131 =
999
2
|
|
17.
34 – 11 =
23
2
|
18.
523 – 111 =
2
412
|
19.
405 – 273 =
2
132
|
20.
976 + 23 =
2
999
|