Which measuring Instruments would you use to weigh objects? What kinds of objects would you weigh with them?

Here are the solutions to your problems:

1. Colour in the blocks that will make 1 kg.
(Remember: $1 \text{ kg} = 1000 \text{ g}$)

• a) Colour: $500 \text{ g}$, $500 \text{ g}$
  • $500 \text{ g} + 500 \text{ g} = 1000 \text{ g}$
• b) Colour: $250 \text{ g}$, $250 \text{ g}$, $500 \text{ g}$
  • $250 \text{ g} + 250 \text{ g} + 500 \text{ g} = 1000 \text{ g}$
• c) Colour: $250 \text{ g}$, $750 \text{ g}$
  • $250 \text{ g} + 750 \text{ g} = 1000 \text{ g}$
• d) Colour: $50 \text{ g}$, $950 \text{ g}$
  • $50 \text{ g} + 950 \text{ g} = 1000 \text{ g}$
• e) Colour: $500 \text{ g}$, $125 \text{ g}$, $50 \text{ g}$, $125 \text{ g}$, $250 \text{ g}$
  • $500 \text{ g} + 125 \text{ g} + 50 \text{ g} + 125 \text{ g} + 250 \text{ g} = 1050 \text{ g}$
  • Wait, let me recheck e.
  • $500 \text{ g} + 250 \text{ g} + 125 \text{ g} + 125 \text{ g} = 1000 \text{ g}$. So, the $50 \text{ g}$ block is not included.
  • Corrected for e: Colour: $500 \text{ g}$, $125 \text{ g}$, $125 \text{ g}$, $250 \text{ g}$
    • $500 \text{ g} + 125 \text{ g} + 125 \text{ g} + 250 \text{ g} = 1000 \text{ g}$

2. What does each object weigh?
Each small mark on the scale represents $100 \text{ g}$.

• A) The pointer is exactly on $6000 \text{ g}$.
  • Weight: $\boxed{\text{6000 g}}$
• B) The pointer is 3 marks past $4000 \text{ g}$.
  • Weight: $4000 \text{ g} + (3 \times 100 \text{ g}) = 4000 \text{ g} + 300 \text{ g} = \boxed{\text{4300 g}}$
• C) The pointer is 5 marks past $7000 \text{ g}$.
  • Weight: $7000 \text{ g} + (5 \times 100 \text{ g}) = 7000 \text{ g} + 500 \text{ g} = \boxed{\text{7500 g}}$
• D) The pointer is 8 marks past $2000 \text{ g}$.
  • Weight: $2000 \text{ g} + (8 \times 100 \text{ g}) = 2000 \text{ g} + 800 \text{ g} = \boxed{\text{2800 g}}$