Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
221 + 470 =
2
691
|
2.
217 + 692 =
2
909
|
3.
543 + 348 =
891
2
|
4.
551 + 256 =
807
2
|
|
5.
535 – 116 =
2
419
|
6.
986 – 738 =
2
248
|
7.
272 + 434 =
706
2
|
8.
555 – 23 =
532
2
|
|
9.
617 + 153 =
2
770
|
10.
680 + 128 =
808
2
|
11.
821 – 798 =
2
23
|
12.
811 + 47 =
2
858
|
|
13.
598 – 53 =
2
545
|
14.
246 + 595 =
841
2
|
15.
215 – 129 =
2
86
|
16.
958 + 41 =
999
2
|
|
17.
661 + 33 =
2
694
|
18.
378 + 68 =
2
446
|
19.
605 + 88 =
693
2
|
20.
714 + 36 =
750
2
|