Scientific Notation June 4, 2015

“Do not mistake activity with achievement.”

Objectives Change the form of numbers into scientific notation Change scientific notation into standard notation Identify the millions, billions, trillions… places

For five minutes, change the following into scientific notation. 20, ,500, x x x x x 10 9

Find the result. 1.(1.31 x 10 5 ) + (2.29 x 10 6 ) – (0.113 x 10 7 ) First, change them into the same base 10. Second, FACTOR same base 10 and exponent.

2. (0.12 x ) x (3.15 x 10 8 ) First, for convenience change decimals into whole numbers.

English word places…

More zeros…

Page 15 9,500,000 people means: 9 million, 5 hundred thousand 9.5 x ,000,000,000 means: 4 billion 4 x 10 9

Page 15 25,000,000,000,000 means: 25 trillion 25 x 10 12

Read conveniently 22.4 x 10 9 twenty-two point four billion 127 x x One point twenty-seven trillion 3 x x 10 9 three hundred billion

385 x Three hundred eighty-five trillion 7914 x x seventy-nine point fourteen quadrillion 19 x x one point 9 quadrillion

123.5 billion baht plus 800 million baht equals how many billion baht? First, change to standard form (notation). Second, add them. Then, change them into short word form.

More than and less than Page billion baht is more than 11.9 billion baht by how many million baht? 12,200,000,000 = 11,900,000,000 + x 170,000,000,000 = 1,000,000,000,000 - x

Exercises Please complete pages 9, 10, 16 and 17

“Do not mistake activity with achievement.”