Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
784 – 605 =
2
179
|
2.
823 + 48 =
2
871
|
3.
689 – 137 =
552
2
|
4.
687 – 91 =
596
2
|
|
5.
29 – 7 =
22
2
|
6.
982 + 3 =
985
2
|
7.
489 – 104 =
2
385
|
8.
134 + 293 =
427
2
|
|
9.
159 + 461 =
620
2
|
10.
324 – 273 =
51
2
|
11.
839 – 463 =
2
376
|
12.
659 – 259 =
2
400
|
|
13.
945 + 53 =
998
2
|
14.
173 + 490 =
663
2
|
15.
887 + 81 =
2
968
|
16.
659 – 498 =
161
2
|
|
17.
294 + 265 =
2
559
|
18.
977 – 643 =
2
334
|
19.
584 – 8 =
576
2
|
20.
211 – 85 =
126
2
|