i know its anwer is 8100 but how plz explain .
8.1*10 power 3.
2006-06-08 12:42:56 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Use the order of operations to simplify this expression (see source)
Exponentiation is evaluated before multiplication, so:
8.1*10^3 =
8.1*1000 =
8100
2006-06-08 12:49:17 · answer #1 · answered by hfshaw 7 · 0⤊ 1⤋
8.1 x 10 = 81
8.1 x 10 x 10 = 81 x 10 = 810
8.1 x 10 x 10 x 10 = 810 x 10 = 8100
Short form,
8.1 x 10^3 = 8100
When multiplying by 10, you shift the decimal point to the right.
When dividing by 10, you shift the decimal point to the left.
Rule of thumb - Ask yourself if the result would be bigger or smaller when multiplying or dividing to know which direction the decimal point should go.
2006-06-08 19:57:32 · answer #2 · answered by ideaquest 7 · 0⤊ 0⤋
8.1*10^3=
8.1*1000=
8100
2006-06-08 21:38:10 · answer #3 · answered by Omega_sages 2 · 0⤊ 0⤋
break it down, 8.1 x (10x10x10)= 8.1 x (1000) = 8100
2006-06-08 19:54:16 · answer #4 · answered by JESSICA 2 · 0⤊ 0⤋
first do it step by step
10^3=1000
8.1*1000=8100
Good Luck:)
2006-06-09 18:21:09 · answer #5 · answered by kelly 2 · 0⤊ 0⤋