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Cogito

Grade 2 Math · Chapter 2 · Lesson 8

Practice Worksheet

From Ruler to Number Line

Take the object away and the ruler becomes a number line.

10 problems · about 12 minutes · 2.MD.B.6

NameDate

Figure — use these to answer the problems

The dot marks a distance from 0. Move it and read where it sits.
05101520

7

Where the dot sits7
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

3 problems

  1. From “Length Word Problems”

    A 23 cm and a 19 cm strip joined. How long in all?

    Answer

  2. From “How Much Longer?”

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

    Answer

  3. From “Estimating Length”

    About how long is one big step?

    • About 1 metre.
    • About 1 centimetre.

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. How far is 13 from 0 on a number line?

    Answer

  2. On a number line, what should you count?

    • The spaces you move.
    • The marks you pass.

  3. Two spaces past 10 is which number?

    Answer

Build It Up

The same ideas with more to keep track of.

1 problem

  1. One space before 15 is which number?

    Answer

Stretch Yourself

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

3 problems

  1. How far is the 9 mark from 0?

    Answer

  2. Reading the Line

    A dot sits three spaces past the 15 mark. What number is it on?

    Answer

  3. Back From Twenty

    A dot sits four spaces before the 20 mark. What number is it on?

    Answer