10 minus -20 is 30.
16.8 6.8 + 30 - 20 = 6.8 + 10 = = 16.8
10x3+8=80-60+? 30+8=20+? 38=20+? 38-20=? 18=? The answer is 18.
50 + 40 + 40 + 40 + 30 + 30 + 20 + 10 = 260
30/0.5 = 60 + 10 - 2 = 68
10 minus -20 is 30.
30 - 20 = 10
30 or -10 if the 20 is negative.
10 - 5 + 14324 + 12 + 30 - 1000 = 13371
-10
16.8 6.8 + 30 - 20 = 6.8 + 10 = = 16.8
30
10x3+8=80-60+? 30+8=20+? 38=20+? 38-20=? 18=? The answer is 18.
10 + 20 = 30
50 + 40 + 40 + 40 + 30 + 30 + 20 + 10 = 260
18 + 10 + 20 + 30 + 15 + 50= 143
30/0.5 = 60 + 10 - 2 = 68