Eureka Math Grade 2, Module 7: Problem Solving with Length Money and Data
In this unit, your child uses measurement in real problems. They solve story problems about length and money, add and subtract on number lines, and read the time. They make picture graphs, bar graphs, and line plots, and count dollars and coins. It draws on everything from earlier in the year, and the clock work continues in the final part of 2nd grade.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Module 7?
- Solving story problems that compare or combine lengths in inches, feet, or centimeters, and labeling the unit. Learn more: Story problems about length
- Using a number line to add and subtract lengths and amounts of money within 100. Learn more: Adding and subtracting on a number line
- Telling time to the nearest five minutes and using a.m. and p.m. to describe the time of day. Learn more: Telling time to the nearest five minutes
- Solving story problems with dollar bills and coins, including finding a total and making change. Learn more about solving story problems by counting bills and coins: Solving story problems by counting bills and coins · Learn more about solving story problems about how much money is left
- Measuring a set of objects, such as hand spans, and recording the lengths on a line plot. Learn more: Measuring things and making a line plot
- Making picture graphs and bar graphs from survey data and answering questions about them. Learn more: Making and reading picture graphs and bar graphs
Sample questions to try together
These are real questions from our practice. Tap the speaker to hear one read aloud, or the light bulb for a hint, and talk about the answer together.
Question 1 of 3
A piece of yarn is 40 cm long. If you add another 30 cm piece to it, what is the total length of the yarn?
- 10 cm
- 70 cm
- 60 cm
How you can help
- Count the coins in a jar or pocket together, then make up a story: "If a snack costs 65 cents, how much would be left?"
- Measure everyone's hand span in inches, then plot the lengths with Xs on a line drawn on paper and ask which span is most common.
- Ask friends or family a quick question, like their favorite season, and help your child turn the answers into a bar graph.
Where kids can get stuck
- Counting four mixed coins as 4 cents instead of adding up their values.
- Drawing bars of uneven widths, or starting them at different heights, on a bar graph.
- Recording a pencil a little over 5 inches as 6 inches on a line plot.
Practice makes perfect
Bobby's Math Club has practice problems that adapt to your child’s level, each with a detailed explanation and an easy-to-follow video, so your child can build confidence in these skills one step at a time.
Words your child will hear
- bar graph
- A graph that uses bars of different lengths to show and compare amounts.
- picture graph
- A graph that uses small pictures to show how many are in each group.
- line plot
- A number line with an X above it for each measurement collected.
- data
- Information collected by counting, measuring, or asking questions.
- dollar
- Money worth 100 cents, written with the $ sign, like $1.
- quarter
- A coin worth 25 cents.
- dime
- A coin worth 10 cents, even though it is the smallest coin.
- nickel
- A coin worth 5 cents.
- a.m.
- The hours from midnight to noon, including the morning.
Ready to build your child’s confidence with money, measuring, and graphs?
In Bobby's Math Club, your child practices these skills at just the right level, with a hint when they need one, a clear explanation after every question, and kid-friendly videos. Unlimited practice is free.
Join the club
Written by Robert “Bobby” Barnett
Bobby is an award-winning math teacher, the author of Meet Every Learner’s Needs, and the father of two elementary-school math learners. He uses Bobby’s Math Club with his own kids a few times every week. Learn more or contact Bobby.
Which math standards does Eureka Math Grade 2 Module 7 cover?
Eureka Math Grade 2 Module 7 covers these math standards. Each one links to what it means, sample questions, and teaching strategies.
- 2.MD.B.5: Use addition and subtraction within 100 to solve word problems involving lengths.
- 2.MD.B.6: Represent whole numbers as lengths from 0 on a number line diagram.
- 2.MD.C.7: Tell and write time from analog and digital clocks to the nearest five minutes.
- 2.MD.C.8: Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies.
- 2.MD.D.9: Generate measurement data by measuring lengths of several objects.
- 2.MD.D.10: Draw a picture graph and a bar graph to represent a data set with up to four categories.
For teachers: Unit names and order vary between editions and districts, so your school’s own materials have the exact sequence. Learn how Bobby's Math Club can help your students grow.