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Two-Digit Addition
Grade 2 - Math - Challenge Me
Worksheet 1
1Add the two-digit numbers: 74 + 42
2Which expanded-form sum matches 15 + 25?
375 + ____ = 102
4Does 51 + 97 need regrouping in the ones column?
5There are 71 books on one shelf and 37 books on another shelf. How many books are on both shelves?
6Add the two-digit numbers: 33 + 52
7Which expanded-form sum matches 26 + 18?
841 + ____ = 99
9Does 12 + 44 need regrouping in the ones column?
10There are 35 books on one shelf and 18 books on another shelf. How many books are on both shelves?
About this worksheet
Two-digit addition is not just a larger version of basic facts. A child has to track tens and ones at the same time, and regrouping asks them to exchange ten ones for one ten without losing the value of the number. Many second graders add all the digits they see or forget that the tens column counts groups of ten. This worksheet gives repeated practice with two-digit addends, but the prompts rotate through equations, expanded form, missing addends, regrouping decisions, and word problems. That mix helps reveal whether a child understands the structure rather than memorizing one layout. Encourage your child to say the numbers as tens and ones before adding. Accurate language often prevents column mistakes during independent work.
What your child will learn
Add two two-digit numbers
Decide when regrouping is needed
Use expanded form to add tens and ones
Solve two-digit addition word problems
Worked example
For 46 + 38, add 40 + 30 to get 70 and 6 + 8 to get 14. Then 70 + 14 = 84.
Common mistake
Adding digits without their place value, such as treating four tens as four ones.