To write 8,436 in scientific notation, you first move the decimal point to the left until there is only one non-zero digit to its left. This gives you 8.436. Next, you determine how many places you moved the decimal point, which is 3 places to the left. Finally, you express the number as 8.436 x 10^3 in scientific notation.
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Six hundred four thousand eight hundred
91,298.015
Oh, dude, like, expanded notation is just a fancy way of breaking down a number into its different place values. So, for 1183541029, you'd write it as 1 billion + 1 hundred million + 8 ten million + 3 million + 5 hundred thousand + 4 ten thousand + 1 thousand + 0 hundreds + 2 tens + 9 ones. Easy peasy!
200,000 x 1,000 = 200,000,000 ie Two hundred million.
Sure thing, honey. 20 million 5 hundred thousand in expanded notation using exponents is 2 x 10^7 + 5 x 10^5. Just break down the numbers and slap those exponents on 'em like it's nobody's business. Easy peasy lemon squeezy.