Length Word Problems

2nd Grade MathMeasurement and Data4 pages

About this worksheet

Four length stories, four blank equation lines, and a rotating cast: Maya tapes a 24-inch blue ribbon to an 18-inch yellow one, Leo's pet lizard grows from 16 to 35 centimeters, Marcus cuts 28 centimeters from 72 centimeters of craft wire, and Nina's 56-inch block tower stands over Ben's 39-inch build. Each problem prints the same three lines: an equation with a ? for the unknown, show your work, and an answer labeled in inches or centimeters. The lizard puts the unknown in the middle (16 + ? = 35), so 2nd graders meet the structure Common Core 2.MD.5 asks for in more than one position.

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Curriculum objectives covered

2.MD.5

Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.

All four problems are length word problems within 100 in a single unit, each solved with a symbol for the unknown number.

What's inside this worksheet

Problems 1 and 2: joining and growing

The taped ribbons total 42 inches, and the lizard's growth is the unknown change in 16 + ? = 35.

Problems 3 and 4: cutting and comparing

Craft wire drops from 72 to 44 centimeters, and the tower comparison subtracts 39 from 56.

Work scaffold on every problem

Equation, work and answer lines print under each story, and the directions require the unit in the answer.

Answer key

Each solution gives the equation both ways, such as 72 - 28 = ? alongside 28 + ? = 72.

How teachers use it

Label the problem type

Before solving, students tag each story as result unknown or change unknown. The lizard is the odd one out.

Units cost a point

Mark answers missing inches or centimeters as incomplete. The label line is printed; hold them to it.

Act out problem 1

Tape two real ribbons end to end and measure the result. Joining lengths is the easiest structure to make physical.

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