standard_description: Make a line plot to display a data set of measurements in fractions of a unit (1/2, 1/4, 1/8). Use operations on fractions for this grade to solve problems involving information presented in line plots. For example, given different measurements of liquid in identical beakers, find the amount of liquid each beaker would contain if the total amount in all the beakers were redistributed equally.
problem_activity: Problem 1
For parts (a) and (b) below,
Solve. Show or explain your work.
Assess the reasonableness of your answer.
a.   910 × 233
b.   852 × 488
Problem 2
Damian’s work on a multiplication problem is shown below.
[IMG]
a.   Why is Damian’s answer not reasonable? Use estimation in your explanation.
b.   What mistake do you think Damian made? Why do you think he made that mistake?
c.   Find the correct product of 5,126 × 47.


aligns: no