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빈 칸에 알맞은 수를 넣으세요.
1
12 + 13 × 11 × 2 - 4 = 12 +143 ×2 -4 = 12 +286 -4 = 298 -4 = 294 2
8 × 7 × 15 + 12 - 6 =×+- =+- =- = 3
15 + 8 + 3 × 9 - 4 =++- =+- =- = 4
7 + 15 × 12 - 15 - 3 =+-- =-- =- = 5
11 × 2 - 5 + 9 + 8 =-++ =++ =+ = 6
7 + 10 + 4 × 6 - 7 =++- =+- =- = 7
12 - 12 + 5 + 13 × 9 =-++ =++ =+ = 8
5 + 8 × 14 + 6 - 6 =++- =+- =- = |