Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
315 + 528 =
2
843
|
2.
40 + 526 =
2
566
|
3.
718 + 46 =
2
764
|
4.
55 – 27 =
28
2
|
|
5.
155 + 500 =
655
2
|
6.
204 + 98 =
302
2
|
7.
994 + 5 =
999
2
|
8.
13 – 3 =
1
10
|
|
9.
974 – 98 =
2
876
|
10.
278 – 247 =
2
31
|
11.
147 + 318 =
465
2
|
12.
944 + 48 =
992
2
|
|
13.
693 + 30 =
2
723
|
14.
418 + 43 =
2
461
|
15.
57 + 150 =
207
2
|
16.
674 + 221 =
2
895
|
|
17.
332 – 34 =
2
298
|
18.
11 + 419 =
430
2
|
19.
347 – 186 =
161
2
|
20.
331 – 207 =
2
124
|