1) 8 x (最大的一位数)= ? a) 8 x 9 = 72 b) 8 x 100 = 800 c) 8 x 0 = 0 d) 8 x 15 = 120 2) 72 ÷ (2 至 8 之间的双数)= ? a) 72 ÷ 2 = 36 b) 72 ÷ 4 = 18 c) 72÷ 8 = 9 d) 72 ÷ 6 = 12 3) 12 ÷ (1 和 5 之间的单数)= ? a) 12 ÷ 12 = 1 b) 12 ÷ 1 = 12 c) 12 ÷ 3 = 4 d) 12 ÷ 2 = 6 4) 4 x (大于 5 的数)= ? a) 4 x 5 = 20 b) 4 x 10 = 40 c) 4 x 22 = 48 d) 4 x 13 = 52 5) 40 + (是二位数也是双数)= ? a) 40 + 8 = 48 b) 40 + 22 = 62 c) 40 + 23 = 63 6) 62 + (小于10 的单数)= ? a) 62 + 8 = 70 b) 62 + 5 = 67 c) 62 + 10= 72 d) 62 + 3 = 65

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