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# Strategies for dividing by tenths

Sal uses equivalent fractions to divide both whole numbers and decimals by tenths.

## Want to join the conversation?

• Does anyone else think that dividing with decimals confusing.
• There is another trick. You can multiply both numbers by 10, or 100 etc.
In zhe example above 0.8÷0.25, we can multiply all by 100 and get:
80÷25.
• So 1.2 is like 12,right? I understand it, but why is it like that? Because 1 is not 12 so that means 1.2 is not 12. Because you take away the decimal then it is 12.
• Because when you divide by a decimal, you remove move the decimal place to the left however many digits until it is a whole number. Then you divide the number and move the decimal to the right however many times you moved it to the left.
e.g. 20/0.5 20/5= 4.0 = 40

But when you divide a decimal by a decimal, you move the decimal to the left until it is a whole number on both numbers, then after you divide you move it to the right for the combined number of times you moved to the left.
Hope this helps :)
• Why / how is 4.2/0.3 the same as 42/3?
• It's a matter of moving the decimal points.

If you move the decimal point on 4.2 to the right it becomes 42, but you also have to do the same thing on the denominator so 0.3 becomes 3. Put them together and you have 42/3

If you're not sure, divide 4.2 by 0.3 and then divide 42 by 3. You'll find that you get the same answer.
• does anybody think this video is boring
• yes i do
• When dividing decimals, what is the reason for removing the decimals and making them whole numbers? If I were to divide a tenth by a hundredth (e.g., 0.2/0.15), would I multiply by 10/100? Can and should the decimals always be removed when dividing numbers that have decimals? What is the reason for removing the decimals?
• When multiplying the decimal moves the right because the numbers value increases. But when you divide your decimal goes to the left because your number decreases
• Math is good for your brain