Mastering Operations with Decimals

This video tutorial covers operations with decimals, including addition, subtraction, multiplication, and division. It explains the rules for aligning decimal places and provides examples for each operation. The tutorial also discusses how to handle decimals in division by converting divisors to whole numbers. Through various examples, viewers learn to apply these rules to solve decimal problems accurately.

What should you ensure when adding or subtracting decimals?

• Line up the decimal places

• Ignore the decimal places

• Round them to the nearest whole number

• Convert them to fractions

What is the result of 4.2 + 3.78?

• 7.90

• 7.88

• 8.00

• 7.98

How do you handle decimal places when multiplying two decimal numbers?

• Add the number of decimal places in both numbers

• Ignore the decimal places

• Convert them to whole numbers

• Subtract the number of decimal places in both numbers

What is the result of 6.3 - 2.25?

• 4.05

• 4.15

• 4.00

• 4.10

What is the result of multiplying 4.1 by 2.2?

• 9.02

• 8.02

• 9.20

• 8.20

When dividing, what should you do if the divisor has a decimal?

• Ignore the decimal

• Move the decimal to the left

• Convert it to a fraction

• Move the decimal to the right to make it a whole number

What is the result of 408 divided by 2?

• 200

• 204

• 206

• 202

What is the result of 210 divided by 71?

• 2.90

• 3.10

• 3.00

• 2.99

What is the result of 62.1 divided by 3?

• 21.0

• 20.7

• 20.0

• 21.7

What is the result of 520 divided by 21?

• 24.76

• 24.00

• 25.76

• 25.00