Let's solve each of the arithmetic problems shown in the image:

1. 10 - 5:

   • Calculation: $10 - 5 = 5$

2. 2 × 11:

   • Calculation: $2 \times 11 = 22$

3. 6 × 11:

   • Calculation: $6 \times 11 = 66$

4. 12 - 6:

   • Calculation: $12 - 6 = 6$

5. 6 + 4:

   • Calculation: $6 + 4 = 10$

6. 20 ÷ 2:

   • Calculation: $20 \div 2 = 10$

7. 14 ÷ 2:

   • Calculation: $14 \div 2 = 7$

The blank for "14 ÷ 2" should be filled with 7.

Would you like more details or have any questions?

Related Questions:

1. What are the properties of multiplication and division that were applied here?
2. How can these basic operations be represented in a mathematical expression?
3. What is the difference between multiplication and division?
4. Can you give an example of how these operations are used in real-life situations?
5. How would the result change if the numbers in each operation were doubled?

Tip: Practice makes perfect with basic arithmetic! Regularly doing quick exercises like these helps improve mental calculation skills.