Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
407 – 346 =
61
2
|
2.
196 – 55 =
2
141
|
3.
487 – 112 =
2
375
|
4.
197 + 283 =
480
2
|
|
5.
345 – 245 =
2
100
|
6.
859 + 30 =
2
889
|
7.
376 – 198 =
2
178
|
8.
243 – 198 =
2
45
|
|
9.
10 – 3 =
1
7
|
10.
11 + 764 =
2
775
|
11.
549 – 506 =
2
43
|
12.
238 – 41 =
2
197
|
|
13.
783 – 638 =
2
145
|
14.
272 – 256 =
16
2
|
15.
860 – 491 =
369
2
|
16.
922 – 913 =
1
9
|
|
17.
324 + 415 =
2
739
|
18.
85 + 65 =
2
150
|
19.
230 + 560 =
2
790
|
20.
983 – 307 =
2
676
|