# dividing decimals

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Curipod generated lesson: "dividing decimals". #5-7

## lgeisel

Updated 5 months ago

1. Word cloud
120 seconds
What is the simplest way to divide decimals?
2. Slide
60 seconds
To divide decimals, line up the decimal points in both numbers. Divide as you would normally, but add spaces to the end of the numbers to make sure there are the same number of digits in each column. Count the number of decimal places in the answer to make sure it is correct.
Dividing Decimals
3. Slide
60 seconds
Dividing Decimals: Dividing decimals is a math process that involves using the inverse operation of multiplication of decimals to find the answer when dividing two numbers. The answer will have the same number of decimal places as the number with the most decimal places. Decimal Place Value: Decimal place value is the amount each number in a decimal is worth, depending on its place in the decimal. The number farthest to the right is the ones place, the number to the left is the tenths place, and so on. Rounding Decimals: Rounding decimals is a math process that involves changing a decimal to the nearest whole number or tenths, hundredths, or thousandths place by looking at the digit to the right of the place you are rounding to. If the digit is 5 or more, you round up. If the digit is 4 or less, you round down.
Concepts:
4. Slide
60 seconds
The world record for calculating the decimal equivalent of 1/3 (0.3333333...) was set in 2015 by an Australian student. He was able to recite it up to 10,000 decimal places! The decimal 0.999... is equal to 1. This is because 0.999... is the same as 0.9 + 0.09 + 0.009 + 0.0009 + .... and this is the same as 1. The smallest non-zero decimal number is 0.000000001. It is also known as 10-9 or one billionth.
Did you know?
5. Open question
180 seconds
Work together in pairs: What is the result when you divide 0.8 by 0.4?
6. Open question
180 seconds
Work together in pairs: What strategies can you use to divide a decimal by a whole number?
7. Drawings
450 seconds
Brain break: Draw a smiling pineapple taking a leisurely walk on the beach enjoying the sunny day!
8. Poll
60 seconds
What is the result of dividing 0.6 by 0.3?
• 2
• 0.2
• 0.6
• 0.3
9. Poll
60 seconds
What is the result of dividing 5.4 by 0.2?
• 27
• 0.2
• 2.7
• 0.54
10. Poll
60 seconds
What is the result of dividing 3.9 by 0.9?
• 0.9
• 3.9
• 4.3
• 4.3
11. Poll
60 seconds
What is the result of dividing 0.36 by 0.18?
• 2
• 0.18
• 0.2
• 0.36
12. Poll
60 seconds
What is the result of dividing 5.6 by 0.4?
• 14
• 0.4
• 2.4
• 14.4