Summarize the concepts of 'Build up unit' and 'Rate', including the steps and advantages of rate build-up.

Here's a summary of your notes on "Build up unit" and "Rate":

The Build up unit is a fundamental concept.

A rate is a comparison of two quantities with different units.

• Examples: 500 per book, 60 km per hour, 3 cups of rice per cup.

Rate build-up is a step-by-step method where you start from an unknown unit (usually 1) and progressively build up to the desired unit.

Basic Ideas of Rate Build-up:

• Start with 1 unit and its value.
• Multiply the unit and value by two.
• Multiply the unit and value by three.
• You continue this process, building up the unit until you reach your target unit.

Advantages of Rate Build-up:

• It gains confidence in calculations.
• It helps to understand calculations in real-life situations.
• It helps to avoid confusion with formulas.
• It is easy and simple to understand.
• It helps to build a strong foundation.
• It reduces the fear of waste problems.