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YOUAre Ready?Personal
Math Trainer
Online Assessment and
Interventionmy.hrw.com
Complete these exercises to review skills you will need for this chapter.
Percents and DecimalsEXAMPLE 125% = 100% + 25%
= 100 ___ 100 + 25 ___ 100
= 1 + 0.25
= 1.25
Write each percent as a decimal.
1. 45% 2. 91% 3. 8% 4. 111%
Write each decimal as a percent.
5. 0.79 6. 0.8 7. 0.05 8. 1.98
Decimal OperationsEXAMPLE 25.9 − 3.24 →
25.90
− 3.24 22.66
Find each sum or difference.
9. 11.9 − 7.6 10. 24.1 − 9.25 11. 45 − 10.6
12. 6.04 − 3.5 13. 5.17 − 5.09 14. 100 − 3.77
Multiply with Fractions and DecimalsEXAMPLE
5.9 × 3.6 3 5 4 + 1 7 7 2 1.2 4
Multiply.
15.
2.77 × 24
16.
9.95 × 0.7
17.
12.04 × 3.2
18.
38.4 × 0.72
Multiply as you would with whole numbers.Count the total number of decimal places in the two factors.
To add or subtract decimals, align the decimal points. Add zeros if necessary.
Write the percent as the sum of 1 whole and a percent remainder.Write the percents as fractions.
Write the fractions as decimals.
Simplify.
Write the same total number of decimal places in the product.
Unit 7402
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