Multiplication Tricks (1)

Algebra Level 1

What is the value of 123.456 × 1 0 4 123.456 \times 10^{4} ?

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The answer is 1234560.

Angela Fajardo by Angela Fajardo , 19, Philippines

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1 solution

Pham Khanh
Apr 22, 2016

Relevant wiki B y t h e M e n t a l M a t h T r i c k w i k i , t h e w a y t o c a l c u l a t e i t i s : By~the~Mental~Math~Trick~wiki,~the~way~to~calculate~it~is: → 123.456 d e c i m a l g o 4 s t e p s = → 123456 1 m o r e s t e p = 123456 × 10 = 1234560 \xrightarrow[123.456]{decimal~go~4~steps}=\xrightarrow[123456]{1~more~step}=123456 \times 10=\Large \color{#D61F06}{\boxed{\color{#333333}{1234560}}}

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Correction: The first part should be: decimal go 4 steps, not 5

Hung Woei Neoh - 5 years, 1 month ago

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Sorry.Edited

Pham Khanh - 5 years, 1 month ago

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