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빈 칸에 알맞은 수를 넣으세요.
1
7 - 2 + 11 × (20 ÷ 10) = 7 -2 +11 ×2 = 7 -2 +22 = 5 +22 = 27 2
(7 - 7) × 54 ÷ 9 + 9 =×÷+ =÷+ =+ = 3
7 × 12 + 11 - (42 ÷ 7) =×+- =+- =- = 4
6 × 30 ÷ 5 - (12 + 8) =×÷- =÷- =- = 5
(18 ÷ 3) - 6 + 9 × 10 =-+× =-+ =+ = 6
33 ÷ 11 × (6 + 5) - 9 =÷×- =×- =- = 7
36 ÷ 9 + (6 × 5) - 7 =÷+- =+- =- = 8
(9 × 2) - 70 ÷ 10 + 4 =-÷+ =-+ =+ = |