Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
210 – 136 =
74
2
|
2.
828 + 30 =
2
858
|
3.
959 + 26 =
985
2
|
4.
961 – 456 =
2
505
|
|
5.
982 – 534 =
448
2
|
6.
590 + 378 =
968
2
|
7.
826 + 68 =
894
2
|
8.
939 + 30 =
969
2
|
|
9.
389 + 444 =
833
2
|
10.
345 + 653 =
2
998
|
11.
273 + 402 =
2
675
|
12.
530 + 240 =
770
2
|
|
13.
837 – 462 =
2
375
|
14.
647 + 171 =
2
818
|
15.
930 – 421 =
509
2
|
16.
300 – 227 =
73
2
|
|
17.
268 – 25 =
2
243
|
18.
821 – 423 =
2
398
|
19.
381 + 387 =
2
768
|
20.
587 – 527 =
2
60
|