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Cogito

Grade 1 Math · Chapter 2 · Lesson 9

Practice Worksheet

Facts to Ten

Put every strategy together and spot the patterns.

10 problems · about 13 minutes · 1.OA.C.6, 1.OA.B.3

NameDate

Figure — use these to answer the problems

Tap a square. Every other square with the same total lights up too.
Addition chart. Rows are the first number, columns are the second, and each cell is their total.
+012345
0
1
2
3
4
5
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

1 problem

  1. From “Doubles and One More”

    3 + 4 = ?

    Answer

Warm Up

Straightforward practice. Get the method working first.

5 problems

  1. 7 + 3 = ?

    Answer

  2. 2 + 2 = ?

    Answer

  3. 6 + ? = 9

    Answer

  4. 2 + 7 = ?

    Answer

  5. 3 + 3 = ?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. 5 + ? = 10

    Answer

  2. 4 + 5 = ?

    Answer

Stretch Yourself

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

2 problems

  1. The Party

    There are 6 girls and 3 boys at a party. How many children in all?

    Answerchildren

  2. The Fish Tank

    A tank has 4 orange fish and 4 blue fish. How many fish in all?

    Answerfish