Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
425 – 389 =
36
2
|
2.
568 – 475 =
2
93
|
3.
88 – 0 =
88
2
|
4.
552 – 89 =
463
2
|
|
5.
516 – 69 =
2
447
|
6.
376 – 118 =
2
258
|
7.
717 + 117 =
834
2
|
8.
580 + 186 =
766
2
|
|
9.
904 – 530 =
2
374
|
10.
562 + 118 =
680
2
|
11.
932 + 47 =
2
979
|
12.
393 – 311 =
2
82
|
|
13.
925 + 35 =
960
2
|
14.
252 + 195 =
2
447
|
15.
166 + 290 =
456
2
|
16.
407 + 15 =
2
422
|
|
17.
102 – 60 =
2
42
|
18.
315 + 90 =
405
2
|
19.
653 + 152 =
2
805
|
20.
219 – 104 =
2
115
|