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Fourth - Number, money and measure
Standard 4.NS.1.1 - Estimate tips by first rounding the bill to the nearest dollar.
Estimation and rounding • Having investigated the practical impact of inaccuracy and error, I can use my knowledge of tolerance when choosing the required degree of accuracy to make real-life calculations. • Rounds answers to a specified significant figure. • Demonstrates that the context of the question needs to be considered when rounding. • Demonstrates the impact of inaccuracy and error, for example, the impact of rounding an answer before the final step in a multi-step calculation. • Uses a given tolerance to decide if there is an allowable amount of variation of a specified quantity, for example, dimensions of a machine part, 235 mm ± 1 mm.