Oefenen met erbij en eraf tot 1.000
In de mix
|
1.
426 – 286 =
140
3
2
4
|
2.
815 – 468 =
2
347
3
4
|
3.
480 – 255 =
4
2
225
3
|
4.
896 – 168 =
4
2
3
728
|
|
5.
102 + 47 =
4
3
2
149
|
6.
874 – 628 =
246
4
3
2
|
7.
913 + 80 =
2
4
3
993
|
8.
434 + 504 =
2
4
938
3
|
|
9.
253 – 138 =
2
4
115
3
|
10.
929 – 526 =
403
4
2
3
|
11.
950 + 38 =
2
3
4
988
|
12.
877 – 675 =
202
3
4
2
|
|
13.
101 + 640 =
2
741
3
4
|
14.
811 + 121 =
3
2
932
4
|
15.
250 – 30 =
4
3
220
2
|
16.
22 – 4 =
2
3
18
4
|
|
17.
116 – 6 =
3
2
110
4
|
18.
827 – 661 =
2
4
3
166
|
19.
751 + 42 =
2
3
4
793
|
20.
866 + 57 =
2
4
923
3
|