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Comparing Decimal Numbers

Question 101 ...

Question

Question 101 (ii)

Here is a keyboard fo a harmonium.

What is the ratio of black keys to all keys on the given keyboard?

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Solution

the total number of all keys $= 10 + 7 = 17$
The ratio of black keys to all keys on the given keyboard $= \frac{7}{17}$

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Similar questions

Question 101 (i)

Here is a keyboard for a harmonium.
Find the ratio fo white key to black keys on the keyboard.

Question 101 (ii)

Here is a keyboard fo a harmonium.

What is the ratio of black keys to all keys on the given keyboard?

Question 101 (i)

Here is a keyboard for a harmonium.
Find the ratio of white key to black keys on the keyboard.

Question 101 (i)

Here is a keyboard for a harmonium.
Find the ratio of white key to black keys on the keyboard.

Question 101 (iii)

Here is keyboard of a harmonium.

This pattern of keys is repeated on a larger keyboard. How many black keys would you expect to find on a keyboard with 14 such patterns?

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Comparing Decimal Numbers

Standard VII Mathematics

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