Methods
How to find 50% of a number
Multiply the number by 50% in the calculator, or divide it by 2, or multiply by 1/2 (half)
Find 50% of 40
What is 20?
Increase 100 by 50%
What is 150?
Decrease 100 by 10%
What is 90?
Original Price: $40
Discount: 20%
$32
How to find 10% of a number
Multiply the number by 10%, or 10/100, or divide it by 10.
Find 10% of 65
What is 6.5?
Increase 70 by 50%
What is 105?
Decrease 60 by 50%
What is 30?
Original Price: $90
Mark-up 10%
$99
How to find 20% of a number
Find 10% and double
Find 5% of 80
What is 4?
Increase 40 by 25%
What is 50?
Decrease 50 by 10%
what is 45?
Original Price: $25
Markup: 40%
$35
How to find 25%
Half the number twice
Find 75% of 60
What is 45?
Increase 540 by 10%
What is 594?
Decrease 20 by 20%
What is 16?
Original Price: $60
Markup: 70%
Then discount: 10%
$91.8
How to find 75% of a number
Find 50% and 25% and add them together
Find 90% of 70
What is 63?
Increase 80 by 5%
What is 84?
Decrease 78 by 10%
What is 70.2?