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Cogito

Grade 2 Math · Chapter 6 · Lesson 1

Practice Worksheet

Odd or Even

Pair them up and see if one is left over.

10 problems · about 11 minutes · 2.OA.C.3

NameDate

Figure — use these to answer the problems

Pair them up. Is anything left over?
How many8
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

3 problems

  1. From “Word Problems Within 1,000”

    462 + 289 = ?

    Answer

  2. From “Adding Up to Four Numbers”

    13 + 27 + 20 = ?

    Answer

  3. From “Subtracting Across a Zero”

    405 − 137 = ?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. Is 18 odd or even?

    • Even
    • Odd

  2. What does even mean?

    • They pair up with none left over.
    • The number is big.

  3. Is 12 odd or even?

    • Even
    • Odd

Build It Up

The same ideas with more to keep track of.

1 problem

  1. Is 15 odd or even?

    • Odd
    • Even

Stretch Yourself

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

3 problems

  1. How many pairs does 16 make?

    Answer

  2. Sharing Socks

    There are 14 socks. Can every sock find a partner?

    • Yes. 14 is even.
    • No. One is left over.

  3. The Team

    11 children want to work in pairs. Will anyone be left out?

    • Yes. One child is left over.
    • No. Everyone has a partner.