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How can adding doubles help a person multiply by 2?

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Quick Answer

When teaching the multiplication tables, adding doubles can help young students comprehend the principles of multiplying by two. A teacher can also demonstrate that learning the multiplication tables involves doing repeated addition.

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Addition is the basic operation taught students in the lower grades. When children learn how to add 1 + 1, 2 + 2 and up to 10 + 10, this is the principle of doubling a number. Children also learn the definition of multiplication as being repeated addition.

It is important to show students that two times a number is the same as adding doubles. For example, 2 x 4 or twice four is the same as adding two fours or 4 + 4.

Teaching students the doubling principle is useful because students do not have to memorize multiplication. By incorporating visual aids and games to teach these principles, students can become proficient.

After students master multiplication by two, a teacher can help them learn the rest of the multiplication tables by using the technique of repeated addition. For example, teaching multiplication by three involves adding a number three times. The number 9 is 3 x 3, which is the same as adding 3 + 3 + 3.

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