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Cogito

Grade 2 Math · Chapter 4 · Lesson 5

Practice Worksheet

Subtracting Tens and Ones

Take the tens away, then the ones.

10 problems · about 11 minutes · 2.NBT.B.5

NameDate

Figure — use these to answer the problems

The faded blocks are the ones being taken away.
Start with
Taken away
What is left

Tens

4

Ones

3

68 − 25 = 43

Start with68
Take away25
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

2 problems

  1. From “Explaining Why It Works”

    Someone says the bundled ten is "a one". Are they right?

    • No. It is one ten.
    • Yes. It is a one.

  2. From “Adding Past 100”

    58 + 67 = ?

    Answer

Warm Up

Straightforward practice. Get the method working first.

4 problems

  1. 95 − 32 = ?

    Answer

  2. What do you check before you start subtracting?

    • Whether there are enough ones.
    • Which number looks nicer.

  3. 57 − 23 = ?

    Answer

  4. 89 − 45 = ?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. 76 − 40 = ?

    Answer

  2. 68 − 8 = ?

    Answer

Stretch Yourself

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

2 problems

  1. The Jar

    A jar had 79 sweets. 34 were eaten. How many are left?

    Answersweets

  2. The Reading Log

    Leo planned to read 96 pages and has read 42. How many are left?

    Answerpages