1) 81 ÷ -9 = -9
2) -108 ÷ -12 = 9
3) 10 × 7 = 70
4) -110 ÷ 11 = -10
5) 27 ÷ -9 = -3
6) 5 × -9 = -45
7) 12 × 12 = 144
8) -28 ÷ 7 = -4
9) -5 × 3 = -15
10) -12 × -10 = 120
11) 3 × 11 = 33
12) 10 × 3 = 30
13) 10 × 4 = 40
14) -80 ÷ -10 = 8
15) -30 ÷ -6 = 5
16) 132 ÷ 12 = 11
17) 4 × 3 = 12
18) 11 × 4 = 44
19) -10 × 6 = -60
20) -12 × -11 = 132