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Cogito

Grade 1 Math · Chapter 3 · Lesson 7

Practice Worksheet

Taking Nothing and Taking All

Some subtractions you can answer without working.

10 problems · about 10 minutes · 1.OA.C.6

NameDate

Figure — use these to answer the problems

Try taking away 0, then all of them, then one less than all.
You had7
Went away0
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

4 problems

  1. From “Fact Families”

    You know 4 + 5 = 9. What is 9 − 4?

    Answer

  2. From “What Changed?”

    9 − ? = 6

    Answer

  3. From “The Hidden Part”

    Whole 9, one part 4. What is the other part?

    Answer

  4. From “Taking Away”

    7 − 3 = ?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. 10 − 10 = ?

    Answer

  2. 4 − 0 = ?

    Answer

  3. 8 − 0 = ?

    Answer

Build It Up

The same ideas with more to keep track of.

1 problem

  1. 5 − 5 = ?

    Answer

Stretch Yourself

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

2 problems

  1. 9 − 8 = ?

    Answer

  2. The Empty Plate

    There are 6 biscuits. Nobody eats any. How many are left?

    Answerbiscuits