十字交乘法暖身

​十字交乘法暖身

By 夙吟 蕭

Multiple Choice

按照上述規律，空格要填入什麼數字？

• 1

  10

• 2

  5

• 3

  7

• 4

  6

Multiple Choice

空格應該填入什麼數字？

• 1

  5

• 5

  1

• -5

  -1

• -1

  -5

Multiple Choice

空格應該填入什麼數字？

• [2] [-3]

  [3] [-2]

• [2] [-2]

  [3] [-3]

• [1] [-3]

  [6] [-2]

• [2] [-1]

  [3] [-6]