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Cogito

Grade 2 Math · Chapter 1 · Lesson 1

Practice Worksheet

Doubles

Two equal groups make a double.

8 problems · about 11 minutes · 2.OA.B.2

NameDate

Figures — use these to answer the problems

Make both bars the same length. That is a double.
First group and Second group
Double
First group6
Second group6
Figure 1
Fill 14 counters and split them into 7 and 7.

How many14

Counters in all14
First group7
Figure 2

Warm Up

Straightforward practice. Get the method working first.

4 problems

  1. 7 + 7 = ?

    Answer

  2. Which of these is a double?

    • 9 + 9
    • 9 + 8
    • 9 + 10

  3. 5 + 5 = ?

    Answer

  4. 6 + 6 = ?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. 8 + 8 = ?

    Answer

  2. 10 + 10 = ?

    Answer

Stretch Yourself

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

2 problems

  1. Two Hands

    Leo has 8 marbles in each hand. How many marbles does he have altogether?

    Answermarbles

  2. Twin Bookshelves

    Two shelves each hold 9 books. How many books are on the shelves in all?

    Answerbooks