What is the maximum reading on these scales?

Here are the answers to the questions:

1. What is the maximum reading on these scales?

• a. The maximum reading on this scale is $\boxed{\text{5 kg}}$.
• b. The maximum reading on this scale is $\boxed{\text{5 kg}}$.

2. Fill in the intervals on these scales with a maximum reading of 10 kg.
To fill in the intervals on the scales with a maximum reading of 10 kg:

• Mark the major intervals around the dial at $0, 1, 2, 3, 4, 5, 6, 7, 8, 9,$ and 10 kg.
• Between each kilogram mark, add a smaller mark halfway to represent 500 g (or 0.5 kg).

5. Do this practical activity using a kitchen scale and suitable objects.

• We see that the apple weighs 167 g.
  • Find objects that weigh about:
    • 20 g: A small handful of coins, a large marshmallow
    • 90 g: A small bar of soap, a medium-sized egg
    • 35 g: A small chocolate bar, a small packet of crisps
    • 67 g: A small orange, a medium-sized apple
    • 500 g: A standard bag of sugar, a small loaf of bread
• The meat weighs 2 kg 850 g.
  • Find objects that weigh about:
    • 3 kg: A small bag of potatoes, a large chicken
    • 1 kg 500 g: A 1.5-liter bottle of water, a small bag of rice
    • 3 kg 200 g: A small bag of potatoes, a large roast
    • 2 kg 900 g: A small bag of flour, a large roast
    • 4 kg 750 g: A large bag of flour, a a small pet (e.g., a cat)