Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
48 – 0 =
2
48
|
2.
649 – 332 =
2
317
|
3.
329 – 172 =
2
157
|
4.
112 – 60 =
2
52
|
|
5.
699 – 6 =
2
693
|
6.
613 + 314 =
927
2
|
7.
206 – 157 =
2
49
|
8.
797 + 199 =
996
2
|
|
9.
95 + 135 =
2
230
|
10.
173 – 167 =
6
1
|
11.
872 – 48 =
824
2
|
12.
426 + 395 =
821
2
|
|
13.
972 – 328 =
2
644
|
14.
837 – 253 =
2
584
|
15.
875 – 625 =
2
250
|
16.
331 – 95 =
236
2
|
|
17.
482 + 429 =
911
2
|
18.
620 + 317 =
937
2
|
19.
838 – 835 =
1
3
|
20.
184 – 34 =
150
2
|