Decimals: Operations and Techniques

This video tutorial covers the basic operations with decimals: addition, subtraction, multiplication, and division. It provides step-by-step instructions and examples for each operation, emphasizing the importance of aligning decimal points for addition and subtraction, and adjusting decimal places for multiplication and division.

When adding decimals, what is the first step you should take?

• Round the numbers

• Multiply the numbers

• Line up the decimal points

• Subtract the numbers

What is the result of adding 2.09 and 6.927?

• 9.017

• 9.17

• 8.017

• 8.927

What should you do if there are no digits above a decimal place when adding decimals?

• Subtract the numbers

• Move the decimal point

• Add a zero to hold the place

• Ignore the decimal place

When subtracting 16.04 from 9.223, what is the first step?

• Line up the decimal points

• Add the numbers

• Round the numbers

• Multiply the numbers

What is the result of subtracting 9.223 from 16.04?

• 6.817

• 7.817

• 7.81

• 6.81

When multiplying decimals, do you need to line up the decimal points?

• Yes

• No

• Sometimes

• Only if the numbers are large

What is the result of multiplying 14.3 by 7.2?

• 102.96

• 100.96

• 101.96

• 103.96

When dividing 4.17 by 0.3, what should you do to the divisor?

• Multiply by 10

• Subtract one

• Move the decimal point to make it a whole number

• Add a zero

What is the result of dividing 4.17 by 0.3?

• 13.9

• 14.9

• 13.7

• 12.9

What is the result of dividing 54 by 0.09?

• 500

• 600

• 700

• 800