4 乘法 5 等于多少？

4 × 4 = 16 4 × 6 = 24 4 × 3 = 12 4 × 7 = 28 4 × 2 = 8 4 × 8 = 32 4 × 1 = 4 4 × 9 = 36 3 × 5 = 15 5 × 5 = 25 2 × 5 = 10 6 × 5 = 30 1 × 5 = 5 7 × 5 = 35 8 × 5 = 40 9 × 5 = 45 1 × 20 = 20 2 × 10 = 20 5 × 4 = 20 10 × 2 = 20 20 × 1 = 20 4 × 19 = 76 47 × 89 = 4183 48 × 45 = 2160 10 × 67 = 670 58 × 50 = 2900 73 × 32 = 2336 54 - 34 = 20 41 - 21 = 20 10 + 10 = 20