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빈 칸에 알맞은 수를 넣으세요.
1
45 ÷ 9 × 5 × 21 ÷ 3 = 5 ×5 ×21 ÷3 = 25 ×21 ÷3 = 525 ÷3 = 175 2
30 ÷ 6 × 42 ÷ 6 × 2 =×÷× =÷× =× = 3
7 × 63 ÷ 21 ÷ 3 × 7 =÷÷× =÷× =× = 4
48 ÷ 8 × 8 × 12 ÷ 6 =××÷ =×÷ =÷ = 5
63 ÷ 7 × 3 × 7 × 4 =××× =×× =× = 6
5 × 56 ÷ 8 × 12 ÷ 3 =÷×÷ =×÷ =÷ = 7
2 × 9 × 36 ÷ 4 × 5 =×÷× =÷× =× = 8
12 ÷ 6 × 4 × 63 ÷ 9 =××÷ =×÷ =÷ = |