Complete the multiplication and division sums for the following: 4 groups of 2, 5 groups of 2, and 6 groups of 2.

Here are the completed multiplication and division sums:

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• 4 groups of 2 each

  • Multiplication sum: $$4 \times 2 = \boxed{8}$$
  • Division sum: $$8 \div 2 = \boxed{4}$$

• 5 groups of 2 each

  • Multiplication sum: $$5 \times 2 = \boxed{10}$$
  • Division sum: $$10 \div 2 = \boxed{5}$$

• 6 groups of 2 each

  • Multiplication sum: $$6 \times 2 = \boxed{12}$$
  • Division sum