5x3= 2x4= 5x3=

• $2 \times 7 = 14$
• $10 \times 10 = 100$
• $3 \times 7 = 21$
• $5 \times 10 = 50$
• $10 \times 2 = 20$

• $2 \times 4 = 8$
• $12 \times 8 = 96$
• $6 \times 6 = 36$
• $5 \times 9 = 45$
• $50 \times 8 = 400$

• $5 \times 3 = 15$
• $5 \times 6 = 30$ (assuming the blurry number is 6)
• $10 \times 4 = 40$
• $8 \times 4 = 32$
• $8 \times 1 = 8$

Here are the completed quick sums:

• $2 \times 7 = \boxed{14}$
• $10 \times 10 = \boxed{100}$
• $3 \times 7 = \boxed{21}$
• $5 \times 10 = \boxed{50}$
• $10 \times 2 = \boxed{20}$
• $2 \times 4 = \boxed{8}$
• $12 \times 8 = \boxed{96}$
• $6 \times 6 = \boxed{36}$
• $5 \times 9 = \boxed{45}$
• $50 \times 8 = \boxed{400}$
• $5 \times 3 = \boxed{15}$
• $5 \times 6 = \boxed{30}$
• $10 \times 4 = \boxed{40}$
• $8 \times 4 = \boxed{32}$
• $8 \times 1 = \boxed{8}$