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## Appendix B. Arithmetic Review: Weights and Measures

Household Measure and Metric System Equivalents

### Decimal Fractions

Remember that decimals indicate the number is less than a whole number, or less than one. This is important to remember when selecting the correct dose of a drug to prevent overdosing the client.

For example, 0.5mg is less than, or 1/2 of, 1.0 milligrams.

Remember, when reading decimals, the number to the left of the decimal point is a whole number; the number to the right of the decimal point is a percentage of a whole number.

Example 1.1

Number to the left of the decimal point = 1 (whole number or 100%)

Number to the right of ...

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