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Cogito

Grade 1 Math · Chapter 8 · Lesson 5

Practice Worksheet

Making the Next Ten

Use the make-ten move on bigger numbers.

10 problems · about 13 minutes · 1.NBT.C.4, 1.OA.C.6

NameDate

Figure — use these to answer the problems

The ones reach ten. Bundle them into a new rod.
First number
and Add ones
Altogether

Tens

2

Ones

13

28 + 5 = 33

First number28
Add ones5
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

4 problems

  1. From “Adding Ones Without Making a New Ten”

    31 + 6 = ?

    Answer

  2. From “Adding Tens to Any Number”

    16 + 20 = ?

    Answer

  3. From “Subtracting Tens From Tens”

    30 − 20 = ?

    Answer

  4. From “Adding Tens to Tens”

    20 + 10 = ?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. 29 + 5 = ?

    Answer

  2. What does 27 need to reach 30?

    Answer

  3. 18 + 5 = ?

    Answer

Build It Up

The same ideas with more to keep track of.

1 problem

  1. 27 + 6 = ?

    Answer

Stretch Yourself

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

2 problems

  1. 26 + 8 = ?

    Answer

  2. Beads

    Leo has 29 beads. He adds 4 more. How many now?

    Answerbeads