Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
518 + 462 =
980
2
|
2.
276 + 617 =
2
893
|
3.
673 – 519 =
2
154
|
4.
129 + 743 =
2
872
|
|
5.
536 + 162 =
698
2
|
6.
405 + 79 =
484
2
|
7.
500 – 499 =
2
1
|
8.
720 – 179 =
541
2
|
|
9.
593 + 166 =
759
2
|
10.
733 + 261 =
994
2
|
11.
9 – 4 =
5
1
|
12.
185 – 126 =
59
2
|
|
13.
396 + 64 =
460
2
|
14.
313 – 251 =
2
62
|
15.
385 – 232 =
153
2
|
16.
441 – 433 =
1
8
|
|
17.
883 – 514 =
2
369
|
18.
781 + 8 =
2
789
|
19.
256 + 580 =
836
2
|
20.
380 + 578 =
958
2
|