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빈 칸에 알맞은 수를 넣으세요.
1
6 × 15 + 15 + 15 - 11 = 90 +15 +15 -11 = 105 +15 -11 = 120 -11 = 109 2
8 × 8 - 6 × 6 + 9 =-×+ =-+ =+ = 3
4 + 10 × 4 - 14 + 6 =+-+ =-+ =+ = 4
15 × 10 + 10 - 10 - 8 =+-- =-- =- = 5
15 × 6 - 3 - 10 + 15 =--+ =-+ =+ = 6
13 + 15 × 9 × 2 - 12 =+×- =+- =- = 7
12 × 11 - 3 - 6 + 15 =--+ =-+ =+ = 8
6 × 4 + 15 - 12 - 10 =+-- =-- =- = |