3 - Australian Teacher

Working outspacecontinue overpage if you needmore roomHow to Conquer Fractions, Decimals & Percentages Vol 2 MethodDecimalsFinding a decimal of percentage quantities** The Rule: The number of digits following the decimal point in your answermust equal the number of digits following the decimal point in the decimalnumber being multiplied.Method1. Ignore –just for now- the decimal point. Also ignore –for now- any zeroes at the start of the decimalnumber.Now multiply this modified decimal number by the percentage number, in the same way you wouldmultiply any two whole numbers.2. Count the number of digits following the decimal point in the original decimal number.3. Insert a decimal point in the answer you obtained in step 1, ensuring the number of digits that followit equals the number of digits obtained in step 2.4. Simplify if necessary, as in examples 1, 3 and 4.NB answers must have a % sign after the number.Example 1 Example 2 Example 3 Example 4Find 0.6 of 70% Find 0.3 of 15% Find 0.25 of 60% Find 0.75 of 12%6 x 70 = 420 3 x 15 = 45 25 x 60 = 1 500 75 x 12 = 900 42.0 4.5 15.00 9.0042% 4.5% 15% 9%Now try these:1 Find 0.7 of 50% 2 Find 0.9 of 90% 3 Find 0.2 of 30% 4 Find 0.8 of 65%5 Find 0.25 of 90% 6 Find 0.75 of 80% 7 Find 0.25 of 30% 8 Find 0.75 of 20%9 What is 0.8 of 55%? 10 What is 0.35 of 60%? 11 What is 0.35 of 40%?12 How much is 0.7 of 70%? 13 How much is 0.1 of 89%?14 How much is 0.85 of 80%? 15 How much is 0.44 of 100%?16 Find 0.25 of 60% 17 Find 0.53 of 10% 18 Find 0.89 of 100%19 Find 0.9 of 100% 20 Find 0.1 of 11% 21 Find 0.09 of 100%22 What is 0.99 of 10%? 23 What is 0.15 of 20%? 24 What is 0.78 of 50%25 How much is 0.49 of 60%?No. Correct % Score Signature or Comment© Intelligent Australia Productions 26