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Why does multiplying numbers by 10 move the decimal to the right but multiplying numbers By .10 you move the decimal to the left?
0.10 = 1/10 so that multiplying by 0.10 is the same as dividing by 10.
What is the general rule for multiplying a decimal by a negative integer power of 10?
The decimal point is moved to the left by the value of the power.
When multiplying two factors that each have 1 decimal place place the decimal point in the product places to the left?
two.
Why do you add a decimal point in math with numbers?
To the left of a decimal point are whole numbers. On the right of a decimal point are parts of a whole number.
Where does the decimals used?
What do you mean if you mean in multiplication after multiplying move the decimal to the left for how many numbers there were after the decimal point. if you mean in addition or subtraction the you line up the numbers and then the point stays where it was Ex. 2.13 +31.4 --------- 43.53 If you mean in division then the easiest way is to move the decimal point to the right of the divisor however many times you wish and you have to do the same with the dividend and after dividing that you have to replace however many times you move the decimal point
