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Answer :
Sure! Let's calculate each percentage step-by-step using simple mental math techniques:
a. What is 10% of 70?
To find 10% of a number, you simply move the decimal point one place to the left. So, 10% of 70 is 7.0.
b. What is 10% of 110?
Similarly, move the decimal one place to the left, which gives us 11.0.
c. What is 25% of 160?
To find 25%, think of it as a quarter (or divide by 4). So, 160 divided by 4 is 40.0.
d. What is 25% of 48?
Divide 48 by 4, which equals 12.0.
e. What is 50% of 90?
Finding 50% is like finding half of the number. Half of 90 is 45.0.
f. What is 50% of 350?
Half of 350 is 175.0.
g. What is 75% of 300?
Think of 75% as 50% + 25%. So, half of 300 is 150, and a quarter is 75. Added together, that's 225.0.
h. What is 75% of 48?
Similarly, 75% is 50% + 25%. Half of 48 is 24, and a quarter is 12. Added together, that's 36.0.
These step-by-step techniques should help in calculating percentages mentally.
a. What is 10% of 70?
To find 10% of a number, you simply move the decimal point one place to the left. So, 10% of 70 is 7.0.
b. What is 10% of 110?
Similarly, move the decimal one place to the left, which gives us 11.0.
c. What is 25% of 160?
To find 25%, think of it as a quarter (or divide by 4). So, 160 divided by 4 is 40.0.
d. What is 25% of 48?
Divide 48 by 4, which equals 12.0.
e. What is 50% of 90?
Finding 50% is like finding half of the number. Half of 90 is 45.0.
f. What is 50% of 350?
Half of 350 is 175.0.
g. What is 75% of 300?
Think of 75% as 50% + 25%. So, half of 300 is 150, and a quarter is 75. Added together, that's 225.0.
h. What is 75% of 48?
Similarly, 75% is 50% + 25%. Half of 48 is 24, and a quarter is 12. Added together, that's 36.0.
These step-by-step techniques should help in calculating percentages mentally.
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