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빈 칸에 알맞은 수를 넣으세요.
1
7 × 12 ÷ 3 × 5 × 5 = 84 ÷3 ×5 ×5 = 28 ×5 ×5 = 140 ×5 = 700 2
40 ÷ 8 × 2 × 7 × 2 =××× =×× =× = 3
3 × 81 ÷ 9 × 8 ÷ 2 =÷×÷ =×÷ =÷ = 4
2 × 72 ÷ 8 × 4 × 7 =÷×× =×× =× = 5
40 ÷ 5 × 5 ÷ 5 × 7 =×÷× =÷× =× = 6
8 × 7 ÷ 7 × 40 ÷ 8 =÷×÷ =×÷ =÷ = 7
14 ÷ 2 × 8 ÷ 4 × 8 =×÷× =÷× =× = 8
30 ÷ 6 × 6 ÷ 2 × 9 =×÷× =÷× =× = |