1.
50 – 29 =
3
2
21
4
|
2.
70 + 849 =
4
919
3
2
|
3.
971 – 631 =
3
2
340
4
|
4.
267 – 65 =
4
2
3
202
|
5.
135 – 40 =
4
95
3
2
|
6.
958 + 8 =
4
2
3
966
|
7.
224 + 143 =
3
2
367
4
|
8.
688 – 399 =
3
4
2
289
|
9.
504 – 74 =
2
430
4
3
|
10.
947 + 42 =
2
3
989
4
|
11.
374 + 412 =
3
4
2
786
|
12.
762 + 212 =
974
3
4
2
|
13.
83 – 78 =
2
1
3
5
|
14.
883 + 16 =
899
3
4
2
|
15.
895 + 6 =
3
2
4
901
|
16.
27 – 9 =
3
18
4
2
|
17.
21 – 20 =
4
1
3
2
|
18.
752 + 30 =
782
4
2
3
|
19.
703 – 598 =
2
4
3
105
|
20.
388 – 363 =
25
2
4
3
|
1.
50 – 29 =
3
2
21
4
|
2.
70 + 849 =
4
919
3
2
|
3.
971 – 631 =
3
2
340
4
|
4.
267 – 65 =
4
2
3
202
|
5.
135 – 40 =
4
95
3
2
|
6.
958 + 8 =
4
2
3
966
|
7.
224 + 143 =
3
2
367
4
|
8.
688 – 399 =
3
4
2
289
|
9.
504 – 74 =
2
430
4
3
|
10.
947 + 42 =
2
3
989
4
|
11.
374 + 412 =
3
4
2
786
|
12.
762 + 212 =
974
3
4
2
|
13.
83 – 78 =
2
1
3
5
|
14.
883 + 16 =
899
3
4
2
|
15.
895 + 6 =
3
2
4
901
|
16.
27 – 9 =
3
18
4
2
|
17.
21 – 20 =
4
1
3
2
|
18.
752 + 30 =
782
4
2
3
|
19.
703 – 598 =
2
4
3
105
|
20.
388 – 363 =
25
2
4
3
|