Add 2-digit numbers (sum under 100) - Grapes

• Students will add two-digit numbers using place value strategies and standard algorithms.
• Students will apply regrouping (carrying) when the ones digits sum to 10 or more.
• Students will solve two-digit addition problems in both horizontal and vertical formats.

These two-digit addition worksheets for 2nd grade give students the targeted practice they need to master adding numbers up to 99. Students work through problems with and without regrouping, building fluency with the standard addition algorithm alongside place value understanding. Our 2-digit addition worksheets include a range of formats, from vertical column addition to word problems, so your child sees the concept from every angle. Two-digit addition is a cornerstone of 2nd grade math and the launchpad for multi-digit computation in later grades.

Start by reviewing the concept of regrouping with base ten blocks or a quick drawing of tens and ones before diving into the worksheet. Encourage your child to always add the ones column first, then the tens. When regrouping is needed, remind them to write the carried digit above the tens column so they do not forget it. Mix in a few mental math warm-ups, like "What is 24 plus 10?", to build number sense alongside written practice.

2.NBT.B.5 requires 2nd graders to fluently add and subtract within 100 using strategies based on place value, properties of operations, and the relationship between addition and subtraction. Two-digit addition worksheets build exactly this fluency through repeated, structured practice.