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Cogito

Grade 2 Math · Chapter 3 · Lesson 6

Practice Worksheet

What Zero Means

A 0 holds a place open. It does not mean nothing is there.

10 problems · about 12 minutes · 2.NBT.A.1, 2.NBT.A.3

NameDate

Figure — use these to answer the problems

Build 204, then 240. The digits are close. The numbers are not.

Hundreds

2

Tens

0

Ones

4

two hundred four

200 + 4 = 204

The number204
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

2 problems

  1. From “Three Ways to Write a Number”

    400 + 70 + 5 in digits?

    Answer

  2. From “Counting to 1,000”

    What comes after 499?

    Answer

Warm Up

Straightforward practice. Get the method working first.

4 problems

  1. 7 hundreds, 0 tens and 2 ones is which number?

    Answer

  2. Why must the 0 in 204 be written?

    • It keeps the 2 in the hundreds place.
    • It makes the number look longer.

  3. 4 hundreds, 0 tens, 9 ones is which number?

    Answer

  4. In 807, how many tens are there?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. In 610, how many ones are there?

    Answer

  2. What does the 0 in 305 mean?

    • There are no tens.
    • There is nothing at all.

Stretch Yourself

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

2 problems

  1. The Careless Answer

    3 hundreds, 0 tens and 6 ones. What is the number?

    Answer

  2. No Ones

    5 hundreds, 7 tens and 0 ones. What is the number?

    Answer