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The problem of continuous increase or decrease in the first grade of primary school
1 57+34-46=

2 47+35-57=

3 30-24+24=

4 46-25+32=

5 8+46-3 1=

6 46+52-57=

7 52-47+42=

8 46-38+62=

9 57-44+62=

10 36-24+37=

1 1 34-3+47=

12 42-40+4

13 45-3+35=

14 46-5+9=

15 47+6-29=

16 36- 15-8=

17 45-43- 1=

18 45-27-9=

19 4+35+24

20 46+ 13+ 12

2 1 35+3+2 1

22 35-22- 1 1

23 42-5-7

24 35-30-4

25 54+58- 14

26 53+38-68

27 47+57+2 1

28 36+25-37

29 63-37- 14

30 47-26- 14