2nd grade math help: place value to 1,000, regrouping and money

Published October 17, 2026 · Last reviewed October 17, 2026 · By the Tutoring Path team

Second grade stretches numbers far past what a child can count on fingers. Students work with hundreds, add and subtract two-digit numbers with regrouping, and start handling coins and bills. It is also the year many families first notice that a child who seemed fine in first grade is now guessing. Here is what the grade usually asks and how to support it.

Key topics in second grade

Standards in most states, often based on the Common Core, ask second graders to:

Understand place value to 1,000, reading and writing numbers in standard, word and expanded form (such as 300 + 40 + 7) and comparing them with the symbols for greater and less.
Add and subtract within 100 fluently, and within 1,000 using models and place-value strategies.
Know addition and subtraction facts within 20 from memory by the end of the year.
Solve money problems with dollars, quarters, dimes, nickels and pennies.
Explore arrays, counting objects in rows and columns and writing a repeated-addition sentence, which prepares for multiplication.
Measure in inches, feet, centimeters and meters, and tell time to the nearest five minutes.

Trouble spots that come up often

Regrouping is the big one. A child solving 52 minus 17 may subtract the smaller digit from the larger in each column and write 45, never noticing the answer is too big. Zeros in numbers like 307 confuse place value. Coins are tricky because a dime is smaller than a nickel yet worth more, and counting a mixed handful means switching between counting by tens, fives and ones. Arrays can turn into random counting if the child does not see the rows as equal groups.

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How to tell your second grader needs more help

Answers to two-digit problems are often wildly off and your child cannot tell.
Basic facts within 20 still take a long time to work out.
Your child can follow the steps on a worksheet but cannot explain why the "borrowing" works.
Counting change is avoided or turns into guessing.

What to ask before hiring a tutor

How do you teach regrouping so it makes sense, not just as a rule?
Do you use real or play money to practice?
How will you build fact fluency without endless drills?
How often will we check in on how it is going?

If homework time is the battleground, our homework help guide has ideas for calmer evenings.

Everyday practice for second graders

Run a pretend store with price tags under a dollar and let your child pay and make change.
Estimate first: before adding 38 and 45, ask whether the answer will be more or less than 80.
Arrays in the kitchen: muffin tins and egg cartons are ready-made rows and columns.
Read house numbers and prices aloud and talk about what each digit is worth.
Jump by tens on a hundred chart from any starting number, such as 23, 33, 43.

A strong grip on place value now pays off next year, when third grade math introduces multiplication and fractions.

Want help with 2nd grade math?

Tell us your child’s grade, ZIP code and the subject that feels hardest. Wherever you live in the U.S., we’ll search for a tutoring provider near you. Families near Bay Ridge, Brooklyn can connect with Huntington Learning Center.

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Sources and further reading

This guide is general information for parents, not professional, medical or legal advice.