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Cogito

Grade 1 Math · Chapter 1 · Lesson 7

Practice Worksheet

One More, One Less

Find one more or one less without recounting.

10 problems · about 10 minutes · 1.OA.C.5, 1.NBT.A.1

NameDate

Figure — use these to answer the problems

Say the answer first. Then tap One more or One less to check.
Marker4
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

4 problems

  1. From “Partners to Ten”

    How many more would make ten?

    Counters4
    Answer

  2. From “All the Ways to Make 8 and 9”

    5 and what make 8?

    Answer

  3. From “All the Ways to Make 6 and 7”

    4 and what make 6?

    Answer

  4. From “Number Bonds”

    The whole is 6. One part is 2. What is the other part?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. What is one more than 4?

    Answer

  2. What is one less than 7?

    Answer

  3. What is one more than 8?

    Answer

Build It Up

The same ideas with more to keep track of.

1 problem

  1. What is one less than 5?

    Answer

Stretch Yourself

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

2 problems

  1. What is one more than 9?

    Answer

  2. Building a Tower

    Leo has a tower of 6 blocks. He adds 1 more. How tall is it now?

    Answerblocks