Home Chapter 18 Practice Test

# Practice Test

Decimal and Percent Concepts and Decimal Computation

This activity contains 10 questions.

## When connecting fractions to decimals, we should

 Use models to explore the families in rational numbers Extend the base-ten decimal system to numbers less than one Use the symbols of equivalences such as 1.75 and 1¾. Use operations to show methods of translating between fractions and decimals

## Before considering decimal numerals, it is wise to review old concepts. One of the most basic ideas relevant to decimal numerals is

 The expanded form translating from fractions to decimals Whether the fraction it represents is more or less than ½ , 0, or 1 The ten-to-one relationship between the value of two adjacent positions Decimals are easier to use than fractions

## Early work with base-ten fractions is designed primarily to include all of the following EXCEPT....

 To extend the place value system for computational issues To learn to read and write base-ten fractions in different ways To acquaint students with the models To help them begin to think of quantities in terms of tenths and hundredths

## To model 1/3 as an infinitely repeating decimal, students should first

 Utilize the calculator to convert the problem Looking at a 10 x 10 square to determine what 1/3 would represent Model 1/3 as a decimal by partitioning the whole square into 3 parts using strips and squares Attempt to divide the numerator into the denominator and extending infinitely

## Explain 2 models for representing the number 0.75.

 To create paragraphs in your essay response, type

at the beginning of the paragraph, and

at the end.

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