When you move a decimal point to the right you are multiplying a number by 10. For example, take 3.4. If you move the decimal point to the right you get 34. This is the same as: 3.4x10 = 34. Reversing this, you are dividing by 10 by moving the decimal point to the left. For example, take 73. If you move the decimal point to the right you get 7.3. This is the same as: 73/10 = 7.3. If you move a decimal point 2 spaces to the right, you are multiplying by 100, or more generally if you move the decimal point n spaces to the right, you are multiplying by 10^n.
This is because we count in tens so that the place value of a digit is ten times the place value of the digit to its right.
left
move the decimal to the left
To the left.
right
0.10 = 1/10 so that multiplying by 0.10 is the same as dividing by 10.
why does multiplying numbers by ten move the decimal point to the right
When you move a decimal point to the right you are multiplying a number by 10. For example, take 3.4. If you move the decimal point to the right you get 34. This is the same as: 3.4x10 = 34. Reversing this, you are dividing by 10 by moving the decimal point to the left. For example, take 73. If you move the decimal point to the right you get 7.3. This is the same as: 73/10 = 7.3. If you move a decimal point 2 spaces to the right, you are multiplying by 100, or more generally if you move the decimal point n spaces to the right, you are multiplying by 10^n.
This is because we count in tens so that the place value of a digit is ten times the place value of the digit to its right.
This is because we count in tens so that the place value of a digit is ten times the place value of the digit to its right.
Well, honey, you move the decimal to the right when you're multiplying by powers of 10. It's as simple as that. Just count how many zeros are in the power of 10 and shift that decimal over to the right that many places. Easy peasy lemon squeezy!
left
This is because we count in tens so that the place value of a digit is ten times the place value of the digit to its right.
Multiplying by 1000
Yes, by a number between 0 and 1.
To multiply by 10, add a zero (move the decimal one place to the right.) To divide, take a zero away (move the decimal one place to the left.)