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Estimating Decimals

Introduction

Terms

Decimal - A number greater than any whole number.
Fraction - A part of a whole can be expressed as a fraction.
Decimal Fraction - The un-simplified form of a fraction that has been converted from a decimal.
Simplified Fraction - A fraction that has been reduced to the lowest possible whole numbers.

Examples

Estimate the sum by rounding each decimal to the nearest whole number
When we add and we get

Estimate the difference by rounding each decimal to the nearest whole number
When we subtract minus we get

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