Oefenen met erbij en eraf tot 1.000
In de mix
|
1.
550 – 245 =
305
4
3
2
|
2.
637 + 42 =
2
3
679
4
|
3.
644 – 131 =
513
3
2
4
|
4.
45 – 11 =
2
4
3
34
|
|
5.
525 + 108 =
4
3
2
633
|
6.
52 – 42 =
1
3
10
2
|
7.
975 – 569 =
4
2
3
406
|
8.
481 – 379 =
2
4
3
102
|
|
9.
648 – 242 =
3
2
4
406
|
10.
412 + 26 =
3
4
2
438
|
11.
252 – 5 =
247
2
4
3
|
12.
547 + 7 =
3
2
4
554
|
|
13.
374 + 414 =
2
788
4
3
|
14.
47 – 40 =
3
1
2
7
|
15.
565 – 279 =
2
3
286
4
|
16.
666 + 300 =
2
3
4
966
|
|
17.
563 + 309 =
2
4
3
872
|
18.
245 – 154 =
91
2
4
3
|
19.
970 – 525 =
2
445
4
3
|
20.
718 + 52 =
2
770
4
3
|