Fractions in Tenths

Property If you can find one tenth of an amount, you can find two tenths, or three tenths, and so on. Remember that $\frac{2}{10}$ can also be written as 0.2, $\frac{3}{10}$ as 0.3, and so on. To find a fraction like $\frac{4}{10}$ (or $0.4$) of a number, first find $\frac{1}{10}$ of the number by dividing by 10, then multiply the result by 4.

Examples To find $0.7$ of 420, first find one tenth: $420 \div 10 = 42$. Then multiply by 7: $42 \times 7 = 294$. A park is 90 acres. If $0.3$ of it is woodland, the woodland area is found by first getting $\frac{1}{10}$ of 90, which is 9. Then, $9 \times 3 = 27$ acres. Out of 1500 voters, $0.6$ voted for Candidate A. First, $\frac{1}{10}$ is $1500 \div 10 = 150$. So, $150 \times 6 = 900$ people voted for Candidate A.

Explanation This is a two step move! First, find the size of one tenth by dividing. Then, multiply to get the number of tenths you need. It's like grabbing multiple slices of a pizza after you know the size of one slice.