Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
772 + 15 =
2
787
|
2.
982 – 270 =
2
712
|
3.
442 – 102 =
2
340
|
4.
620 – 508 =
112
2
|
|
5.
852 + 51 =
903
2
|
6.
929 + 63 =
992
2
|
7.
710 – 659 =
51
2
|
8.
150 + 323 =
473
2
|
|
9.
590 – 302 =
2
288
|
10.
623 + 323 =
946
2
|
11.
398 + 295 =
693
2
|
12.
933 + 20 =
2
953
|
|
13.
934 – 213 =
2
721
|
14.
300 + 116 =
416
2
|
15.
151 + 339 =
490
2
|
16.
618 – 302 =
2
316
|
|
17.
539 – 88 =
2
451
|
18.
911 + 23 =
934
2
|
19.
739 – 567 =
2
172
|
20.
65 – 9 =
2
56
|