1
/
10
12 × 7 + 24 × 7 =
2
/
10
13 × 28 - 13 × 18 =
3
/
10
24 × 15 + 12 × 24 =
4
/
10
16 × 16 - 16 ×13 =
5
/
10
40 × 12 - 40 × 7 =
6
/
10
45 ×6 + 4 ×6 =
7
/
10
79 ×8 - 8 × 68 =
8
/
10
90 × 6 - 6 × 82 =
9
/
10
17 × 28 - 17 ×19 =
10
/
10
19 × 0 + 19 × 3 = 