Skip to lesson

Choose “Save as PDF” in the print dialog to keep a copy.

Cogito

Grade 5 Math · Chapter 1 · Lesson 2

Practice Worksheet

Powers of Ten

A short way to write a long number.

10 problems · about 15 minutes · 5.NBT.A.2

NameDate

Figure — use these to answer the problems

Each place up is one more power of ten.

Hundreds

1

Tens

0

Ones

0

The number100
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

2 problems

  1. From “Ten Times and One Tenth”

    600 ÷ 10 = ?

    Answer

  2. From “Ten Times and One Tenth”

    What does moving a digit one place left do to its value?

    • Multiplies it by 10.
    • Divides it by 10.

Warm Up

Straightforward practice. Get the method working first.

4 problems

  1. What is 7 × 10² ?

    Answer

  2. What does the exponent count?

    • How many tens are multiplied.
    • How many tens are added.

  3. What is 10² ?

    Answer

  4. What is 10⁵ ?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. How many zeros does 10⁴ have?

    Answer

  2. Is 10³ the same as 30?

    • No. It is 1,000.
    • Yes.

Stretch Yourself

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

2 problems

  1. The Short Way

    What is 10³ written out in full?

    Answer

  2. The Big One

    What is 4 × 10³?

    Answer