Oefenen met erbij en eraf tot 1.000
In de mix
|
1.
659 – 326 =
3
2
333
4
|
2.
500 + 379 =
4
879
3
2
|
3.
835 + 109 =
2
4
3
944
|
4.
559 – 430 =
129
4
2
3
|
|
5.
473 – 115 =
358
3
2
4
|
6.
334 + 186 =
520
4
3
2
|
7.
655 – 485 =
170
4
3
2
|
8.
291 + 7 =
3
2
4
298
|
|
9.
269 + 31 =
4
300
3
2
|
10.
371 + 39 =
410
2
4
3
|
11.
154 + 632 =
4
786
2
3
|
12.
709 – 278 =
4
2
431
3
|
|
13.
815 + 180 =
2
3
995
4
|
14.
296 – 40 =
4
3
256
2
|
15.
190 + 727 =
3
917
4
2
|
16.
355 + 617 =
2
4
3
972
|
|
17.
110 + 325 =
2
435
3
4
|
18.
622 + 269 =
3
891
2
4
|
19.
146 – 137 =
9
2
1
3
|
20.
92 – 32 =
4
2
60
3
|