Oefenen met erbij en eraf tot 1.000
In de mix
|
1.
485 + 255 =
4
2
3
740
|
2.
802 – 690 =
3
112
2
4
|
3.
75 + 129 =
204
4
2
3
|
4.
908 – 650 =
3
4
258
2
|
|
5.
575 – 149 =
2
426
4
3
|
6.
590 + 146 =
736
3
2
4
|
7.
466 + 15 =
4
3
2
481
|
8.
845 – 545 =
2
300
4
3
|
|
9.
797 – 777 =
3
2
20
4
|
10.
824 – 232 =
4
2
3
592
|
11.
339 + 632 =
3
971
2
4
|
12.
192 – 6 =
2
186
4
3
|
|
13.
617 – 8 =
4
609
3
2
|
14.
921 – 85 =
2
4
3
836
|
15.
111 – 107 =
3
2
4
1
|
16.
825 + 136 =
4
3
961
2
|
|
17.
411 – 233 =
2
3
4
178
|
18.
371 + 421 =
792
3
2
4
|
19.
690 – 347 =
343
2
4
3
|
20.
437 + 268 =
3
2
705
4
|