Question

Number 43.56 can be written as:

• A. 1000 x 4 + 100 x 3 + 10 x 5 + 6
• B. 10 x 4 + 1 x 3 + 5 x $\frac{1}{10}$ + 6 x $\frac{1}{100}$
• C. 10 x 3 + 1 x 4 + 5 x $\frac{1}{100}$ + 6 x $\frac{1}{10}$
• D. 10 x 4 + 1 x 3 + 6 x $\frac{1}{10}$ + 5 x $\frac{1}{100}$

Answer 1

The correct option is B 10 x 4 + 1 x 3 + 5 x $\frac{1}{10}$ + 6 x $\frac{1}{100}$

In a decimal number, digits of the whole number part before the decimal point will be at tens, hundreds places etc.
So 43 can be written as 10 x 4 + 1 x 3

Also after the decimal point, digits will be at tenths, hundredths places.
So 56 after the decimal point can be written as 5 x $\frac{1}{10}$ + 6 x $\frac{1}{100}$

So 43.56 can be written as :
10 x 4 + 1 x 3 + 5 x $\frac{1}{10}$ + 6 x $\frac{1}{100}$