Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
559 – 225 =
334
2
|
2.
194 – 25 =
169
2
|
3.
340 – 12 =
328
2
|
4.
91 + 607 =
2
698
|
|
5.
961 – 188 =
2
773
|
6.
774 + 135 =
909
2
|
7.
954 – 325 =
629
2
|
8.
17 + 60 =
2
77
|
|
9.
624 – 571 =
2
53
|
10.
869 – 385 =
2
484
|
11.
947 + 40 =
2
987
|
12.
489 + 400 =
889
2
|
|
13.
706 – 197 =
2
509
|
14.
376 – 376 =
2
0
|
15.
607 + 21 =
628
2
|
16.
378 – 243 =
135
2
|
|
17.
112 + 682 =
794
2
|
18.
684 – 593 =
2
91
|
19.
5 – 2 =
3
1
|
20.
892 – 547 =
345
2
|