# Tag: math

## Abacus Math Program – Lesson 16 – Reverse Double Rod

In Lesson 11 we looked at the Forward Double Rod movement for addition problems. Now let’s take a look at the Reverse

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## Abacus Math Program – Lesson 13 – Forward Double Five

To this point in our abacus skill training we have introduced all of the basic bead movements required to perform any

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## Abacus Math Program – Lesson 12 – The 5/10 Pair Combination Part 2

Lesson 11 the 5/10 Pair Combination Part 1, we introduced the 5/10 pair combination for addition. Here in Lesson 12

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## Abacus Math Program – Lesson 11 – The 5/10 Pair Combination Part 1

So far in Lesson 5, 6, 7, and 8 we introduced addition and subtraction with 10 pair complements when the operation requires

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## Abacus Math Program – Lesson 9 – Five Pair Complement Part 1

We are now half way through the Rightlobemath.com skill training program. So far we have learned to represent base 10 numbers on

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## Abacus Math Program – Lesson 8 – Ten Pair Complement Subtraction Part 2

Continuing from Lesson 7 Subtraction Part 1 we will look at a few more 10 pair complement subtraction examples. Again there are 5

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## Abacus Math Program – Lesson 7 – Ten Pair Complement Subtraction Part 1

In Lesson 5 and Lesson 6 we introduced the idea of 10 pair complement addition on the abacus. Here in Lesson 7 we will introduce

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