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Cogito

Grade 3 Math · Chapter 3 · Lesson 8

Practice Worksheet

Patterns in the Times Tables

The tables are full of patterns, and each one has a reason.

10 problems · about 13 minutes · 3.OA.D.9

NameDate

Figures — use these to answer the problems

Tap a square to light every other square with the same total.
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
Set the rows and columns to the same number. It makes a square.

4 × 4 = 16

Rows4
Columns4
Figure 2

Warm-Up Review

From earlier lessons. Loosen up before the new work.

3 problems

  1. From “Missing Factors and Divisors”

    7 × ? = 63

    Answer

  2. From “Multiplying by Multiples of Ten”

    7 × 40 = ?

    Answer

  3. From “The Associative Property”

    2 × 5 × 6 = ?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. Is 8 × 7 odd or even?

    • Even
    • Odd

  2. When is a product odd?

    • Only when both factors are odd.
    • When one factor is odd.

  3. Is 5 × 9 odd or even?

    • Odd
    • Even

Build It Up

The same ideas with more to keep track of.

1 problem

  1. What is 7 × 7?

    Answer

Stretch Yourself

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

3 problems

  1. In the nine times table, the digits of each answer add to what?

    Answer

  2. Odd or Even

    Is 7 × 6 odd or even?

    • Even
    • Odd

  3. The Square

    What is 6 × 6?

    Answer