standard_description: Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions.
Grade 4 expectations in this domain are limited to fractions with denominators 2, 3, 4, 5, 6, 8, 10, 12, and 100.
problem_activity: Problem 1
a.   Look at the number line below:
[IMG]
Based on where 0 and 100 are, what number do you think the question mark is on? Explain your choice.
b.   Look at the number line below:
[IMG]
Based on where 0 and 1,000 are, what number do you think the question mark is on? Explain your choice.
Problem 2
a.   What is the location of the following point?
[IMG]
b.   What is the location of the following point?
[IMG]
Problem 3
a.   Plot 27,361 on a number line from 27,360 to 27,370.
b.   Plot 27,361 on a number line from 27,300 to 27,400.
c.   Plot 27,361 on a number line from 27,000 to 28,000.
d.   Plot 27,361 on a number line from 20,000 to 30,000.


aligns: no