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Cogito

Grade 1 Math · Chapter 4 · Lesson 1

Practice Worksheet

Ten Ones Make One Ten

Bundle ten little ones into one big ten.

10 problems · about 11 minutes · 1.NBT.B.2.a

NameDate

Figure — use these to answer the problems

Set it to 10 or more, then tap Bundle. Watch the ones become a ten.

Tens

0

Ones

10

Blocks in all10
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

7 problems

  1. From “Adding and Subtracting to Ten”

    7 − 2 = ?

    Answer

  2. From “Subtracting From Ten”

    10 − 6 = ?

    Answer

  3. From “Taking Nothing and Taking All”

    10 − 10 = ?

    Answer

  4. From “Fact Families”

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

    Answer

  5. From “What Changed?”

    9 − ? = 6

    Answer

  6. From “The Hidden Part”

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

    Answer

  7. From “Taking Away”

    7 − 3 = ?

    Answer

Warm Up

Straightforward practice. Get the method working first.

2 problems

  1. How many ones are in one ten?

    Answer

  2. You bundle ten ones. Do you have more, less, or the same?

    • The same amount.
    • More than before.
    • Less than before.

Stretch Yourself

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

1 problem

  1. Pencil Pots

    Mia has one full ten of pencils and no loose ones. How many pencils?

    Answerpencils