Home Chapter 17 Practice Test

# Practice Test

Computation with Fractions

This activity contains 9 questions.

## Focusing attention on fraction rules and answer getting has two significant dangers, one of which is

 Mastery is only short term Students force procedures to obtain answers Students think too much on the concepts Obtaining an answer that is incorrect

## The algorithm that relies on repeated subtraction for modeling division of two fractions with unlike denominators is called

 Measurement Common-denominator Invert and multiply Partitioning

## Finding common denominators requires the students to

 find factors that the two denominators have in common find the simplest form of each fraction find common multiples of the denominators quickly find the equivalent forms of each fraction

## When beginning work with multiplication of two fractions 1/2 x 2/3, you should tell students that

 students should cross cancel the twos to simplify the problem this means you must multiply the numerators and then the denominators and simplify the answer students should model and solve this problem with the standard algorithms just like in whole numbers such as 3x5 where we said 3 sets of 5, ½ x 2/3 means ½ of a set of 2/3

## Which of the following problems would not require the students to subdivide the parts in order to model the solution to the problem?

 3/5 x 4/5 2/7 x 4/5 2/3 x 3/4 1/3 x 5/6

## Explain 2 models for finding the answer to 1/2 + 2/3.

 To create paragraphs in your essay response, type

at the beginning of the paragraph, and

at the end.