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The role of the decimal point in a number is to: A. designate the units position. B. separate the big numbers from the small numbers. C. designate the tenths position. D. separate the dollars from the cents.

Which of the following is a key idea in connecting whole number place value and decimal fraction place value? A. Decimal point designates the unit in the dollars place value with money B. With base-ten models the small square is the only piece that can be one C. The symmetry on the system is around the tens place D. 10 to 1 multiplicative relationship between values of any two adjacent positions

In the real-world decimal fractions are rarely those with exact equivalents to common fractions. Students need to wrestle with the magnitude of decimal fractions. Identify the activity below that addresses magnitude. A. What fraction produces this repeating decimal \(3.454545\) ? B. dentify what \(7.396\) is close to \(7,7^{1} / 2\), or 8 C. Write a fraction as a decimal D. Use both a fraction and decimal on a number line

A good teaching option for developing a full understanding of computation with decimals is to focus on: A. computation with whole numbers alone. B. delivering a set of rules that should be practiced. C. detaching and reattaching decimal points for multiplication and division. D. concrete models, drawings, place value knowledge, and estimation.

Multiplication of decimals is poorly understood for many reasons. Identify the misunderstanding that relates to whole number multiplication. A. Understanding decimal numeration should tell the approximate product B. Multiplying makes the product larger C. Count the decimal places in the problem to decide where to place the decimal in the product D. Using the powers of ten for counting and shifting the decimal

Physical models provide the main link between fractions, decimals, and percents. Identify the one model that is suitable for all three because they all represent the same idea. A. Percent necklaces B. Base-ten models C. \(10 \times 10\) grid D. Three-part model to represent original, decrease, and increase