Thi Violympic (Điền chỗ .....)

15 + 36 =
- 27 39 + 53 = 48 +
24 + 29 =
- 43


- 26 = 17 + 48
+ 38 = 62 + 29 93 -
= 35 + 28

24 + 49 =
- 18 46 + 35 = 58 +
26 + 46 =
- 24


- 17 = 25 + 39
+ 29 = 55 + 37 84 -
= 23 + 39

34 + 25 =
- 17 56 + 34 = 48 +
27 + 37 =
- 34


- 15 = 39 + 26
+ 26 = 44 + 47 87 -
= 15 + 48

35 + 18 =
- 26 39 + 44 = 56 +
18 + 37 =
- 29


- 25 = 43 + 18
+ 24 = 64 + 19 81 -
= 45 + 17

5 x 9 =
- 16 4 x 9 = 18 +
8 x 7 =
- 25


- 18 = 7 x 9
+ 38 = 6 x 9 82 -
= 5 x 8

45 : 5 =
- 19 81 : 9 = 37 -
72 : 8 =
- 27


- 37 = 54 : 9
+ 4 = 64 : 8 63 -
= 63 : 7

4 x 7 =
- 17 3 x 9 = 19 +
7 x 6 =
- 29


- 15 = 8 x 6
+ 36 = 9 x 8 61 -
= 4 x 6

48 : 8 =
- 27 72 : 8 = 35 -
54 : 9 =
- 45


- 48 = 36 : 9
+ 3 = 40 : 8 56 -
= 56 : 8

4 x 9 + 26 =
24 : 4 x 7 + 19 =
7 x 7 + 36 =


15 + 28 : 4 x 8 - 27 =
- 47 75 - 24 : 3 x 8 + 31 =
x 3 + 15

4 x 8 + 49 =
63 : 9 x 7 + 49 =
8 x 8 + 36 =


28 + 19 + 24 : 4 x 6 =
- 17 39 - 18 : 6 x 9 + 31 =
x 4 + 27