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Cogito

Grade 2 Math · Chapter 5 · Lesson 5

Practice Worksheet

Breaking a Hundred Apart

Not enough tens? Open a hundred.

10 problems · about 14 minutes · 2.NBT.B.7, 2.NBT.B.9

NameDate

Figure — use these to answer the problems

There are not enough tens. Break a hundred open first.
Start with
Taken away
What is left

Hundreds

2

Tens

5

Ones

3

425 − 172 = 253

Start with425
Take away172
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

2 problems

  1. From “Subtracting Within 1,000”

    758 − 326 = ?

    Answer

  2. From “Making a New Hundred”

    275 + 168 = ?

    Answer

Warm Up

Straightforward practice. Get the method working first.

4 problems

  1. 635 − 172 = ?

    Answer

  2. Breaking a hundred gives you how many tens?

    Answer

  3. 526 − 183 = ?

    Answer

  4. 748 − 265 = ?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. 3 hundreds and 14 tens is which number?

    Answer

  2. 859 − 327 = ?

    Answer

Stretch Yourself

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

2 problems

  1. Another Way to Show It

    2 hundreds, 15 tens and 4 ones is which number?

    Answer

  2. The Shop

    A shop had 634 items and sold 281. How many are left?

    Answeritems