- How do you move the decimal point to find 1% of a number?
- What happens if we insert a zero to the left of a whole number?
- When you’re multiplying does the order of the factors matter?
- Where will we put the decimal point in the quotient?
- How do you know if an exponent is positive or negative?
- Why does multiplying by 10 move the decimal to the right?
- Do you move the decimal to the left or right?
- How do you know which way to move the decimal in scientific notation?
- What does 10 to the power of 8 mean?
- What are the four rules of decimals?
- Which way do you move the decimal if the exponent is negative?
- Why do you move the decimal point when dividing?
- What is the rule of scientific notation?
- How many times do you move the decimal to make a percent?
- Which way do you move the decimal point when dividing by 10?
- What happens when you move the decimal to the right?

## How do you move the decimal point to find 1% of a number?

To find 1% of something (1/100 of something), divide by 100.

Remember how to divide by 100 mentally: Just move the decimal point two places to the left.

For example, 1% of 540 is 5.4..

## What happens if we insert a zero to the left of a whole number?

As you can see, that little zero makes a big difference, because it causes the rest of the numbers to shift over one place. … This concept makes even more sense when you think about the decimal point.

## When you’re multiplying does the order of the factors matter?

The commutative property says that the order of the numbers doesn’t matter in multiplication. So the order of the numbers doesn’t matter when describing an array. We can use the expression 5 × 3 5 \times 3 5×3 to show 5 groups of 3.

## Where will we put the decimal point in the quotient?

Notice that the decimal point in the quotient is directly above the decimal point in the dividend. To divide a decimal by a whole number, we place the decimal point in the quotient above the decimal point in the dividend and then divide as usual.

## How do you know if an exponent is positive or negative?

If a negative number is raised to an even power, the result will be positive. If a negative number is raised to an odd power, the result will be negative. The negative number must be enclosed by parentheses to have the exponent apply to the negative term.

## Why does multiplying by 10 move the decimal to the right?

When multiplying a decimal by 10 the amount of zeros increased from the right (naturally) making the decimal point go to the right. But when multiplying by 0.10 the zeros come from the left making the number decrease.

## Do you move the decimal to the left or right?

We know that the decimal point goes to the right of the ones place. So when you divide by powers of ten (ten times itself some number of times, like ten, one hundred, one thousand, etc.), the decimal moves to the left. For each power of ten, you move one place to the left.

## How do you know which way to move the decimal in scientific notation?

To write a number in scientific notation: Move the decimal to a position immediately to the right of the first nonzero digit. value of the exponent. – If you moved the decimal point to the left, make the exponent positive. – If you moved the decimal point to the right, make the exponent negative.

## What does 10 to the power of 8 mean?

108. 100,000,000. “ten to the eight” billion.

## What are the four rules of decimals?

You should become efficient in using the four basic operations involving decimals—addition, subtraction, multiplication, and division.

## Which way do you move the decimal if the exponent is negative?

If the exponent is negative, move the decimal point to the left. For each power of 10, you move the decimal point one place.

## Why do you move the decimal point when dividing?

Incorrect. Remember that when you divide, you do not count the total number of decimal places in the divisor and dividend. You change the divisor to a whole number, then move the decimal point in the dividend the same number of places and divide.

## What is the rule of scientific notation?

Scientific notation examples. Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8.

## How many times do you move the decimal to make a percent?

All you do is just move the decimal point 2 spaces to the right to make a percent.

## Which way do you move the decimal point when dividing by 10?

If you multiply a decimal by 10, the decimal point will move one place to the right. If you divide a decimal by 10, the decimal point will move one place to the left. If you multiply or divide by any power of 10, it will move a number of spaces equal to the number of 0’s.

## What happens when you move the decimal to the right?

If you have to move the decimal point to the right to get the original number, the exponent will be a positive number, if you have to move the decimal point to the left to get the original number, the exponent will be a negative number.