Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
124 + 183 =
2
307
|
2.
534 – 69 =
2
465
|
3.
312 + 201 =
2
513
|
4.
253 – 100 =
153
2
|
|
5.
240 – 111 =
2
129
|
6.
565 + 66 =
631
2
|
7.
757 + 20 =
2
777
|
8.
815 – 580 =
235
2
|
|
9.
540 + 87 =
2
627
|
10.
82 – 17 =
2
65
|
11.
832 + 79 =
2
911
|
12.
322 – 256 =
66
2
|
|
13.
323 + 19 =
342
2
|
14.
743 – 62 =
2
681
|
15.
452 + 483 =
935
2
|
16.
72 – 17 =
2
55
|
|
17.
869 – 330 =
2
539
|
18.
782 + 143 =
925
2
|
19.
681 + 196 =
2
877
|
20.
179 – 96 =
2
83
|