№47. Вычисли.

Решение:

• \( 42 : 7 = 6 \)
• \( 24 : 7 = 3 \)
• \( 21 : 7 = 3 \)
• \( 28 : 7 = 4 \)
• \( 35 : 7 = 5 \)
• \( 42 : 7 = 6 \)
• \( 56 : 7 = 8 \)
• \( 63 : 7 = 9 \)
• \( 7 \times 3 = 21 \)
• \( 7 \times 8 = 56 \)
• \( 7 \times 5 = 35 \)
• \( 7 \times 6 = 42 \)
• \( 7 \times 4 = 28 \)
• \( 7 \times 10 = 70 \)
• \( 7 \times 2 = 14 \)
• \( 7 \times 3 = 21 \)

Ответ: 6, 3, 3, 4, 5, 6, 8, 9, 21, 56, 35, 42, 28, 70, 14, 21.