Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
242 – 38 =
204
2
|
2.
331 – 45 =
286
2
|
3.
734 – 490 =
2
244
|
4.
234 – 27 =
207
2
|
|
5.
62 – 60 =
2
1
|
6.
307 – 144 =
2
163
|
7.
480 + 20 =
2
500
|
8.
66 – 62 =
4
1
|
|
9.
734 – 269 =
2
465
|
10.
281 – 37 =
244
2
|
11.
381 + 307 =
2
688
|
12.
318 – 283 =
35
2
|
|
13.
883 + 99 =
982
2
|
14.
110 + 422 =
2
532
|
15.
37 + 189 =
2
226
|
16.
410 + 88 =
498
2
|
|
17.
331 + 363 =
2
694
|
18.
142 – 83 =
2
59
|
19.
2 – 0 =
1
2
|
20.
458 + 225 =
2
683
|