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Cogito

Grade 2 Math · Chapter 2 · Lesson 6

Practice Worksheet

How Much Longer?

Compare two lengths and find the difference.

10 problems · about 12 minutes · 2.MD.A.4

NameDate

Figure — use these to answer the problems

Set both lengths. The dashed piece is the difference.
Pen (cm)
Crayon (cm)
Pen length12
Crayon length8
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

3 problems

  1. From “Estimating Length”

    About how long is one big step?

    • About 1 metre.
    • About 1 centimetre.

  2. From “The Same Object, Two Units”

    Which gives the bigger number, centimetres or metres?

    • Centimetres.
    • Metres.

  3. From “Inches and Feet”

    How many inches are in a foot?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. A 16 cm rope and an 11 cm rope. How much longer is the first?

    Answer

  2. What unit does the difference have?

    • The same unit as the lengths.
    • No unit at all.

  3. 14 cm and 6 cm. How much longer is the first?

    Answer

Build It Up

The same ideas with more to keep track of.

1 problem

  1. 20 cm and 13 cm. How much longer is the first?

    Answer

Stretch Yourself

Mixed problems. Work out what kind of question it is before you start.

3 problems

  1. 9 inches and 12 inches. How much shorter is the first?

    Answer

  2. Two Ribbons

    A red ribbon is 15 cm and a blue one is 9 cm. How much longer is the red one?

    Answercm

  3. Two Sticks

    A stick is 18 cm. Another is 18 cm. How much longer is the first?

    Answercm