1.
279 + 10 =
289
4
3
2
|
2.
619 + 10 =
3
2
629
4
|
3.
974 – 10 =
2
4
3
964
|
4.
302 + 30 =
2
3
332
4
|
5.
441 + 70 =
3
511
4
2
|
6.
860 + 90 =
3
950
4
2
|
7.
495 – 50 =
3
445
4
2
|
8.
909 – 60 =
2
3
4
849
|
9.
217 + 30 =
4
3
2
247
|
10.
179 – 100 =
4
3
79
2
|
11.
306 – 20 =
3
4
286
2
|
12.
246 + 20 =
4
2
3
266
|
13.
211 – 80 =
3
2
4
131
|
14.
454 + 60 =
4
3
2
514
|
15.
505 – 10 =
495
3
2
4
|
16.
361 + 90 =
451
3
2
4
|
17.
999 – 60 =
2
4
3
939
|
18.
466 + 60 =
2
3
4
526
|
19.
429 – 10 =
419
4
3
2
|
20.
358 – 70 =
2
3
4
288
|
1.
279 + 10 =
289
4
3
2
|
2.
619 + 10 =
3
2
629
4
|
3.
974 – 10 =
2
4
3
964
|
4.
302 + 30 =
2
3
332
4
|
5.
441 + 70 =
3
511
4
2
|
6.
860 + 90 =
3
950
4
2
|
7.
495 – 50 =
3
445
4
2
|
8.
909 – 60 =
2
3
4
849
|
9.
217 + 30 =
4
3
2
247
|
10.
179 – 100 =
4
3
79
2
|
11.
306 – 20 =
3
4
286
2
|
12.
246 + 20 =
4
2
3
266
|
13.
211 – 80 =
3
2
4
131
|
14.
454 + 60 =
4
3
2
514
|
15.
505 – 10 =
495
3
2
4
|
16.
361 + 90 =
451
3
2
4
|
17.
999 – 60 =
2
4
3
939
|
18.
466 + 60 =
2
3
4
526
|
19.
429 – 10 =
419
4
3
2
|
20.
358 – 70 =
2
3
4
288
|