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Unit: Basic Algebra
Chapter: Metric Measures & Word Problems
Reference: – Metric System of Measurement, Units of Length (mm, cm, m, km), Units of Mass (mg, g, kg, tonne), Units of Capacity (mL, L, kL), Conversion Between Metric Units, Operations on Metric Measures (Addition, Subtraction, Multiplication, Division), Word Problems Involving Metric Measures
After studying this chapter, you should be able to understand:
- Metric System & Its Base Units
- Units of Length, Mass and Capacity
- Conversion Between Metric Units
- Operations on Metric Measures
- Solving Word Problems Involving Metric Measures
- Real-Life Applications of Metric Measurement
Finding Percentage of a Number
- To find the percentage of a number, we multiply the required percentage with the number and convert it to simplest form.
Examples-
- What is 20% of 40?
20% of 40 =20100
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× 40 = 8
- What is 5% of 10?
5% of 10 =
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× 10 =
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What Percentage is a number of another number?
- To find what percentage is a number of another number, we divide the other number from the number and multiply 100 to it.
Examples-
- What % is 20 of 40?
? % of 40 = 20
Now,
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=
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× 100% = 50%
- What % is 15 of 75?
? % of 75 = 15
Now,
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= 15/75 × 100% = 20%
