+ = - = + = + =
- = 3- = - = - =
6.5÷100= 4.8×0.1= 5÷7= 0.5×40=
16 - 17 = 13 + 14 = 0.5+ 12 = 0.75- 34 =
718 + 19 = 18 - 19 = 58 - 38 = 1- 38 - 18 =
0.8- 12 = 2- 56 = 34 +0.75= 25 + 23 - 35 =
12 + 13 = 12 ﹣ 14 = 25 ﹣ 15 = 47 ﹣ 17 = 78 ﹣ 38 =
110 + 25 = 56 ﹣ 23 = 13 + 15 = 38 ﹣ 14 = 23 + 13 =
38 + 38 = 12 ﹣ 15 = 47 + 37 = 1﹣ 78 = 56 + 56 =
1﹣ 512 = 35 + 12 = 910 ﹣ 310 = 57 ﹣ 57 = 38 + 58 =