Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
210 + 766 =
2
976
|
2.
76 + 102 =
178
2
|
3.
42 + 279 =
321
2
|
4.
481 + 67 =
548
2
|
|
5.
404 – 31 =
2
373
|
6.
66 – 33 =
2
33
|
7.
155 + 683 =
2
838
|
8.
316 – 152 =
2
164
|
|
9.
573 – 313 =
260
2
|
10.
630 – 104 =
2
526
|
11.
997 + 0 =
2
997
|
12.
216 + 776 =
2
992
|
|
13.
425 + 409 =
2
834
|
14.
73 + 1 =
2
74
|
15.
610 + 258 =
868
2
|
16.
206 – 125 =
81
2
|
|
17.
205 – 201 =
4
1
|
18.
975 + 3 =
978
2
|
19.
299 + 304 =
2
603
|
20.
166 – 25 =
2
141
|