Oefenen met erbij en eraf tot 1.000
In de mix
|
1.
143 – 91 =
3
4
52
2
|
2.
331 + 470 =
3
801
2
4
|
3.
282 + 324 =
2
606
3
4
|
4.
970 – 430 =
2
4
540
3
|
|
5.
551 + 424 =
3
975
4
2
|
6.
432 + 314 =
3
2
4
746
|
7.
504 + 15 =
4
3
519
2
|
8.
947 + 12 =
959
4
3
2
|
|
9.
587 – 188 =
4
399
2
3
|
10.
997 – 965 =
4
2
32
3
|
11.
353 + 18 =
2
3
371
4
|
12.
37 + 858 =
895
2
4
3
|
|
13.
463 + 120 =
583
4
3
2
|
14.
324 + 450 =
4
2
774
3
|
15.
659 – 220 =
439
2
3
4
|
16.
107 + 509 =
616
3
2
4
|
|
17.
57 – 2 =
3
4
2
55
|
18.
570 + 208 =
3
2
778
4
|
19.
606 – 594 =
12
1
2
3
|
20.
264 – 73 =
3
2
4
191
|