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빈 칸에 알맞은 수를 넣으세요.
1
6 × 15 - 3 - 12 + 4 = 90 -3 -12 +4 = 87 -12 +4 = 75 +4 = 79 2
7 × 15 + 15 - 10 × 6 =+-× =+- =- = 3
12 + 11 - 9 + 6 × 4 =+-+ =-+ =+ = 4
12 × 10 - 11 + 4 - 7 =-+- =+- =- = 5
3 + 14 × 5 - 6 - 3 =+-- =-- =- = 6
14 × 5 + 9 × 14 - 8 =+×- =+- =- = 7
7 - 2 + 9 × 7 × 2 =-+× =-+ =+ = 8
6 × 14 + 2 × 5 - 10 =+×- =+- =- = |