Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
811 + 97 =
908
2
|
2.
545 – 7 =
2
538
|
3.
491 + 134 =
2
625
|
4.
708 – 683 =
2
25
|
|
5.
119 – 100 =
2
19
|
6.
178 + 507 =
685
2
|
7.
123 – 18 =
105
2
|
8.
670 + 273 =
943
2
|
|
9.
194 + 188 =
2
382
|
10.
832 + 72 =
904
2
|
11.
91 – 31 =
60
2
|
12.
785 + 195 =
2
980
|
|
13.
422 – 73 =
2
349
|
14.
829 – 314 =
2
515
|
15.
849 – 414 =
2
435
|
16.
165 – 116 =
2
49
|
|
17.
410 + 567 =
2
977
|
18.
47 + 181 =
2
228
|
19.
399 – 398 =
1
2
|
20.
24 + 827 =
851
2
|