Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
951 – 275 =
2
676
|
2.
592 – 146 =
446
2
|
3.
18 – 4 =
1
14
|
4.
696 – 78 =
2
618
|
|
5.
6 – 4 =
1
2
|
6.
308 – 143 =
2
165
|
7.
259 + 236 =
2
495
|
8.
811 + 58 =
2
869
|
|
9.
426 – 115 =
311
2
|
10.
37 – 1 =
2
36
|
11.
419 – 261 =
2
158
|
12.
148 + 551 =
699
2
|
|
13.
224 – 219 =
1
5
|
14.
915 + 5 =
920
2
|
15.
566 – 0 =
566
2
|
16.
524 + 380 =
2
904
|
|
17.
847 – 698 =
2
149
|
18.
910 – 837 =
73
2
|
19.
870 – 863 =
7
1
|
20.
228 – 33 =
195
2
|