Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
548 – 16 =
532
2
|
2.
851 – 315 =
2
536
|
3.
947 + 13 =
2
960
|
4.
605 – 92 =
513
2
|
|
5.
564 + 65 =
2
629
|
6.
510 + 140 =
650
2
|
7.
354 – 41 =
2
313
|
8.
83 – 71 =
12
1
|
|
9.
420 – 90 =
2
330
|
10.
933 – 681 =
2
252
|
11.
316 + 415 =
731
2
|
12.
211 – 125 =
2
86
|
|
13.
695 – 4 =
2
691
|
14.
549 – 450 =
99
2
|
15.
189 – 189 =
2
0
|
16.
507 + 480 =
2
987
|
|
17.
78 – 48 =
30
2
|
18.
676 + 101 =
2
777
|
19.
631 – 417 =
214
2
|
20.
761 + 158 =
2
919
|