3 x 3 x 3 Advanced Addition Shortcut

3 x 3 x 3 Advanced Addition Shortcut: learn a shortcut way how to add 3 rows of 3-digit numbers without regrouping.

Method: work horizontally and add each place value column separately, starting with the hundreds column; then, add the 3 columns together to get your final answer.

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Category:

Education

Tags:

• math
• instructional
• educational
• addition
• regrouping
• homework

[FlashWhiteSnoW]

Quick question,does the work for 6-six digits numbers

[northstar15]

@FlashWhiteSnoW yes, but you will need a lot of space to write it all out

[pb25812462]

Thanks.

First.

[northstar15]

@pb25812462 congrats :)

[IcePrincess619]

Wow cool thanks!

[mreous333]

@FlashWhiteSnoW An alternate ways to add a multiple set of large numbers is to add the numbers in each column in sets that equal 10 & add remaining numbers.

22 32 (Carried numbers)

52,368

45,642

19,563

80,787 6,164

------

204,524

In the ones column, 8 + 2, 7 + 3 both equal 10 = 20, add the 4 = 24. Carry the 2. 6 + 4, 8 + 2 both equal 10 = 20. 6 + 6 = 12 + 20 = 32. Carry the three. In the next column, add 7 + 3, 6 + 3 + 1, and then 5 to make 25. Continue to solve.

[pb25812462]

@northstar15 :D