Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
806 + 157 =
2
963
|
2.
104 – 45 =
59
2
|
3.
134 + 112 =
2
246
|
4.
491 – 73 =
2
418
|
|
5.
859 + 52 =
911
2
|
6.
329 – 185 =
144
2
|
7.
304 – 218 =
2
86
|
8.
279 – 271 =
1
8
|
|
9.
97 – 48 =
49
2
|
10.
979 – 236 =
2
743
|
11.
563 + 93 =
2
656
|
12.
871 + 13 =
2
884
|
|
13.
945 – 737 =
208
2
|
14.
429 + 471 =
900
2
|
15.
446 – 431 =
15
1
|
16.
22 + 96 =
2
118
|
|
17.
569 – 544 =
25
2
|
18.
98 – 85 =
1
13
|
19.
185 – 36 =
149
2
|
20.
941 – 851 =
90
2
|