Oefenen met erbij en eraf tot 1.000
In de mix
|
1.
481 – 417 =
64
3
2
4
|
2.
802 + 126 =
2
3
4
928
|
3.
710 – 335 =
3
375
2
4
|
4.
368 – 308 =
4
2
3
60
|
|
5.
551 + 33 =
4
3
2
584
|
6.
328 + 245 =
3
573
2
4
|
7.
345 – 239 =
3
4
106
2
|
8.
540 – 17 =
4
3
2
523
|
|
9.
580 + 268 =
4
3
2
848
|
10.
233 + 177 =
410
4
3
2
|
11.
310 + 562 =
872
3
4
2
|
12.
617 – 295 =
322
4
3
2
|
|
13.
663 + 321 =
2
3
984
4
|
14.
630 + 245 =
3
875
4
2
|
15.
216 + 327 =
4
3
543
2
|
16.
525 + 268 =
793
4
3
2
|
|
17.
307 – 263 =
44
3
2
4
|
18.
72 – 69 =
1
3
4
2
|
19.
224 + 727 =
951
4
3
2
|
20.
462 + 536 =
2
998
3
4
|