|
1.
469 – 100 =
3
369
4
2
|
2.
479 – 40 =
4
3
2
439
|
3.
579 + 20 =
4
599
3
2
|
4.
647 + 50 =
697
2
3
4
|
|
5.
653 – 10 =
3
4
643
2
|
6.
891 – 20 =
2
4
871
3
|
7.
575 – 10 =
2
565
3
4
|
8.
728 + 10 =
2
4
3
738
|
|
9.
399 + 20 =
2
3
4
419
|
10.
258 + 30 =
2
3
4
288
|
11.
407 – 100 =
307
3
2
4
|
12.
812 + 90 =
4
3
902
2
|
|
13.
718 + 10 =
728
4
3
2
|
14.
640 – 10 =
3
630
2
4
|
15.
817 + 10 =
4
2
3
827
|
16.
614 – 30 =
4
3
584
2
|
|
17.
520 + 10 =
530
3
4
2
|
18.
516 – 20 =
3
2
496
4
|
19.
387 + 90 =
4
2
3
477
|
20.
954 – 100 =
4
3
854
2
|
|
1.
469 – 100 =
3
369
4
2
|
2.
479 – 40 =
4
3
2
439
|
3.
579 + 20 =
4
599
3
2
|
4.
647 + 50 =
697
2
3
4
|
|
5.
653 – 10 =
3
4
643
2
|
6.
891 – 20 =
2
4
871
3
|
7.
575 – 10 =
2
565
3
4
|
8.
728 + 10 =
2
4
3
738
|
|
9.
399 + 20 =
2
3
4
419
|
10.
258 + 30 =
2
3
4
288
|
11.
407 – 100 =
307
3
2
4
|
12.
812 + 90 =
4
3
902
2
|
|
13.
718 + 10 =
728
4
3
2
|
14.
640 – 10 =
3
630
2
4
|
15.
817 + 10 =
4
2
3
827
|
16.
614 – 30 =
4
3
584
2
|
|
17.
520 + 10 =
530
3
4
2
|
18.
516 – 20 =
3
2
496
4
|
19.
387 + 90 =
4
2
3
477
|
20.
954 – 100 =
4
3
854
2
|