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빈 칸에 알맞은 수를 넣으세요.
1
81 ÷ 9 × 6 × 21 ÷ 7 = 9 ×6 ×21 ÷7 = 54 ×21 ÷7 = 1134 ÷7 = 162 2
48 ÷ 6 × 9 ÷ 9 × 3 =×÷× =÷× =× = 3
32 ÷ 8 × 42 ÷ 6 × 2 =×÷× =÷× =× = 4
45 ÷ 5 × 2 × 8 × 7 =××× =×× =× = 5
4 × 3 × 9 × 6 ÷ 2 =××÷ =×÷ =÷ = 6
5 × 7 ÷ 7 × 18 ÷ 6 =÷×÷ =×÷ =÷ = 7
6 × 8 × 10 ÷ 5 × 7 =×÷× =÷× =× = 8
5 × 8 ÷ 2 × 9 × 5 =÷×× =×× =× = |