Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
731 + 162 =
2
893
|
2.
626 – 57 =
2
569
|
3.
263 + 314 =
577
2
|
4.
477 – 393 =
84
2
|
|
5.
979 – 365 =
614
2
|
6.
859 – 301 =
2
558
|
7.
334 – 224 =
2
110
|
8.
778 + 75 =
853
2
|
|
9.
694 + 39 =
2
733
|
10.
177 + 176 =
2
353
|
11.
872 – 616 =
2
256
|
12.
903 + 38 =
2
941
|
|
13.
98 – 88 =
10
1
|
14.
759 + 141 =
900
2
|
15.
955 + 19 =
974
2
|
16.
572 – 373 =
2
199
|
|
17.
433 – 83 =
2
350
|
18.
463 – 421 =
42
2
|
19.
722 + 205 =
927
2
|
20.
659 – 469 =
190
2
|