Operations with Decimals: A Comprehensive Overview

This video tutorial covers operations on decimals, including addition, subtraction, multiplication, and division. It provides step-by-step instructions and examples for each operation, emphasizing the importance of aligning decimal points and counting decimal places. The tutorial also includes practice problems for students to solve and check their answers.

What is the first step when adding decimal numbers?

• Annex zeros

• Line up the decimal points

• Multiply the numbers

• Subtract the smaller number

In the example 35.43 + 121.9, what should you do after lining up the decimal points?

• Move the decimal point to the left

• Subtract the numbers

• Annex a zero next to the 9

• Multiply the numbers

When subtracting decimal numbers, what should you do if there is a blank space in the decimal places?

• Add the numbers

• Move the decimal point

• Ignore the blank space

• Annex a zero

What is the process called when you need to take a value from the next higher place value in subtraction?

• Annexing

• Borrowing

• Carrying

• Aligning

When multiplying decimal numbers, what should you count?

• The number of factors

• The number of digits in the whole number

• The number of decimal places

• The number of zeros

In multiplication, what should you do after multiplying the top number by the number to the far right?

• Subtract the numbers

• Put a zero placeholder and multiply by the next number

• Add the numbers

• Move the decimal point

When dividing decimal numbers, what is the first step?

• Move the decimal point in the divisor to make it a whole number

• Subtract the numbers

• Multiply the numbers

• Annex zeros

What should you do to the dividend if you move the decimal point in the divisor?

• Annex zeros

• Move the decimal point in the dividend the same number of places

• Subtract the numbers

• Multiply the numbers

In the division example 2.856 ÷ 0.04, what is the final answer?

• 71.4

• 7.14

• 0.714

• 714

What is the correct order of operations for solving decimal problems?

• Division, Multiplication, Addition, Subtraction

• Multiplication, Division, Addition, Subtraction

• Addition, Multiplication, Subtraction, Division

• Addition, Subtraction, Multiplication, Division