Two-Digit Addition with Regrouping

2nd Grade MathAddition and Subtraction6 pages

About this worksheet

Six vertical addition frames open this 2nd grade regrouping worksheet, each with a small box above the tens column for the carried ten: 38 + 25, 47 + 16, 59 + 24, 26 + 37, 65 + 18 and 44 + 39. Every one of them regroups, so nobody coasts on easy items. Two story problems follow, Sammy the Squirrel's 27 + 35 acorns and a class library of 46 fiction plus 28 non-fiction books, and the sheet ends with a riddle in which four sums convert to letters that spell FROG. The answer key narrates each regroup ones first, the routine Common Core 2.NBT.5 expects.

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Curriculum objectives covered

2.NBT.5

โ€œFluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.โ€

All twelve additions, from the six framed problems to the riddle sums, stay within 100 and lean on the ones-then-tens routine.

What's inside this worksheet

Part 1: Place Value Addition

Six tens-and-ones frames, from 38 + 25 to 44 + 39. The ones digits total 13 in every single frame, a pattern sharp students can discover.

Part 2: Story Problems

Sammy the Squirrel gathers 27 then 35 acorns, and the classroom library totals 46 fiction and 28 non-fiction books. Both leave show-your-work space.

Part 3: Riddle Match

Four more sums (56 + 15, 38 + 45, 29 + 33, 47 + 45) map to the letters F, R, O and G, answering a printed riddle about a jumping animal.

Answer key

Every regroup written out, such as 8 + 5 = 13 ones becoming 1 ten and 3 ones.

How teachers use it

Pattern hunt

After marking Part 1, ask why every problem needed a regroup. The ones digits always total 13, and students can find that themselves.

Riddle as motivator

Open with Part 3's promise of a mystery word. Students who see the letters spell nothing sensible go back and check their own sums.

Box discipline

Require the carried 1 in the printed box, never floating. It keeps the tens column honest when three-digit numbers arrive.

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