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This Addition No Regrouping drill has 40 problems for Grade 2. Lighthouses theme. Answer key included.
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Max races to guide ships safely past rocks using addition signals from five lighthouses before the storm hits!
Standard: CCSS.MATH.2.NBT.B.5
Addition without regrouping is a foundational skill that helps second graders build confidence and speed with two-digit numbers. At this age, children are moving beyond counting on their fingers and developing mental math strategies—this worksheet focuses on sums where no carrying is needed, allowing them to concentrate on place value without the extra cognitive load. When your child adds 23 + 14 or 31 + 25, they're practicing the critical habit of adding ones to ones and tens to tens separately, a skill they'll use for years to come. This solid understanding of simple addition also makes multi-digit math and word problems feel less overwhelming. Mastering addition without regrouping gives second graders the independence and accuracy they need to tackle word problems about real situations—like counting visitors to lighthouses or combining collections of shells—with genuine success.
Many second graders forget to align digits by place value and accidentally add 23 + 14 as 2 + 1 = 3 and 3 + 4 = 7, writing 37 instead of 37 (which works here by accident). More commonly, they'll misalign columns, placing the 4 under the 2 instead of under the 3, creating answers like 25 instead of 37. Watch for students who add the tens and ones columns but then reverse the digits in their answer, writing 75 instead of 57. You can catch these mistakes by asking your child to explain where the ones place and tens place are before they write their answer.
Create a simple addition game using two-digit house or building numbers in your neighborhood. Ask your child to add two house numbers they see on a walk: 'If we visit house 34 and then house 23, what's 34 + 23?' Have them line up the digits on paper using two fingers or a pencil to mark the columns clearly. This real-world context helps them see that addition is useful beyond the worksheet and reinforces the habit of careful alignment every single time.