Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
115 – 27 =
88
2
|
2.
460 + 501 =
2
961
|
3.
369 + 238 =
2
607
|
4.
609 + 1 =
610
2
|
|
5.
871 + 120 =
991
2
|
6.
130 – 106 =
24
2
|
7.
472 – 338 =
134
2
|
8.
530 + 451 =
2
981
|
|
9.
822 + 120 =
942
2
|
10.
142 – 114 =
28
2
|
11.
648 + 53 =
701
2
|
12.
401 + 140 =
541
2
|
|
13.
51 – 31 =
20
2
|
14.
414 + 118 =
532
2
|
15.
769 – 326 =
2
443
|
16.
270 + 205 =
475
2
|
|
17.
470 + 439 =
2
909
|
18.
934 – 108 =
826
2
|
19.
838 + 27 =
2
865
|
20.
317 – 165 =
2
152
|