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N.3 Multiply 2 by numbers up to 12

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What are multiplication facts?

Multiplication facts are the basic answers you get when you multiply two numbers together. Knowing these facts quickly and accurately helps you solve more complex math problems.

Examples:
  • 2 × 3 = 6
  • 2 × 7 = 14
  • 2 × 10 = 20
Note

Think of multiplication as repeated addition. For example, 2 × 4 means two groups of four, or 4 + 4, which equals 8.

Multiplying by 2 the pattern of doubles

Multiplying any number by 2 is the same as doubling that number. The result is always an even number.

Pattern:
  • 2 × 1 = 2 (Double of 1 is 2)
  • 2 × 6 = 12 (Double of 6 is 12)
  • 2 × 9 = 18 (Double of 9 is 18)
Note

You already know how to double numbers! Use that skill to find any fact for 2. Just add the number to itself.

Multiplication facts for 2 up to 12

This is the complete set of facts you should practice to build fluency. Say them, write them, and use them.

Fact Table:
  • 2 × 0 = 0
  • 2 × 1 = 2
  • 2 × 2 = 4
  • 2 × 3 = 6
  • 2 × 4 = 8
  • 2 × 5 = 10
  • 2 × 6 = 12
  • 2 × 7 = 14
  • 2 × 8 = 16
  • 2 × 9 = 18
  • 2 × 10 = 20
  • 2 × 11 = 22
  • 2 × 12 = 24
Note

Look at the ones place in the answers: 2, 4, 6, 8, 0. This even number pattern repeats. After 2 × 10 = 20, the pattern continues (22, 24).

Using multiplication facts to solve problems

Once you know the facts, you can use them to find the total number of items in equal groups.

Word Problem Examples:
  • "If one pack has 2 pencils, how many pencils are in 7 packs?"
    Think: 2 × 7 = 14 pencils.
  • "There are 2 cookies on each plate. If there are 12 plates, how many cookies are there?"
    Think: 2 × 12 = 24 cookies.
Note

The words "each," "every," "per," and "in one" often signal that you should multiply to find the total for all groups.

Strategies for practicing and remembering

Use different strategies to help the facts become automatic.

Helpful Strategies:
  • Use Tools: Count by 2s aloud: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24.
  • Flashcards: Write the fact (2 × 8) on one side and the answer (16) on the other.
  • Relate to Addition: Remember 2 × 8 is the same as 8 + 8.
  • Find Patterns: All products end in 0, 2, 4, 6, or 8.
Note

Consistent, short practice sessions are more effective than one long session. Try practicing for five minutes each day.