Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
221 – 115 =
2
106
|
2.
504 + 48 =
2
552
|
3.
365 + 337 =
702
2
|
4.
360 – 197 =
2
163
|
|
5.
182 – 29 =
153
2
|
6.
408 – 224 =
2
184
|
7.
156 – 107 =
2
49
|
8.
265 – 250 =
1
15
|
|
9.
17 – 5 =
12
1
|
10.
424 – 244 =
180
2
|
11.
235 + 188 =
423
2
|
12.
308 – 160 =
148
2
|
|
13.
316 – 12 =
304
2
|
14.
535 – 81 =
2
454
|
15.
582 + 22 =
2
604
|
16.
266 – 40 =
226
2
|
|
17.
358 – 329 =
2
29
|
18.
318 + 367 =
2
685
|
19.
849 + 147 =
996
2
|
20.
22 – 0 =
2
22
|