Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
785 + 8 =
793
2
|
2.
53 – 22 =
31
2
|
3.
428 – 144 =
284
2
|
4.
840 – 19 =
2
821
|
|
5.
620 + 15 =
2
635
|
6.
667 + 68 =
735
2
|
7.
955 + 23 =
978
2
|
8.
70 + 45 =
115
2
|
|
9.
80 – 64 =
2
16
|
10.
696 + 66 =
762
2
|
11.
346 + 239 =
2
585
|
12.
524 + 58 =
582
2
|
|
13.
277 + 238 =
2
515
|
14.
410 + 200 =
2
610
|
15.
313 – 78 =
235
2
|
16.
22 – 12 =
1
10
|
|
17.
527 – 261 =
266
2
|
18.
164 + 254 =
2
418
|
19.
663 – 125 =
2
538
|
20.
184 – 57 =
127
2
|