## Build Calculation Speed Practicing the 10 Pair Complements

The main method of addition and subtraction on the abacus is understanding and using the 5 complement pairs of 10, i.e.

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# Tag: complements

## Build Calculation Speed Practicing the 10 Pair Complements

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

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

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

## Abacus Math Program – Lesson 10 – Five Pair Complement Part 2

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

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

## Abacus Math Program – Lesson 6 – Ten Pair Complement Addition Part 2

## Abacus Math Program – Lesson 5 – Ten Pair Complement Addition

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The main method of addition and subtraction on the abacus is understanding and using the 5 complement pairs of 10, i.e.

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

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

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

Continue readingIn Lesson 9 Five Pair Part 1 we examined the 5 pair addition rule. Here in Lesson 10 Part 2 we are

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

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

Continue readingContinuing from Lesson 5, we will look at a few more 10 pair complement addition examples. Again there are 5 possible

Continue readingIn lesson 5, we will introduce the concept of 10 pair complements or 10 pairs. If you are new to

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