1. Use various strategies to and operations to solve problems involving real numbers.

2.  Decimal numbers are known as rational numbers. To understand decimals it is important to understand place value. (Poster)

3. Round the number 568.4587 to the nearest: A. Tenth: B. Hundredth: C. Thousandth:

4.  Round the following decimals to the nearest tenth. 1. 45.585. 4.543 2. 17.0416. 91.385 3. 5.2847. 25.483 4. 0.6188. 0.349

5.  Round to the nearest hundredth. 1. 10.0495. 6.354 2. 0.7536. 5.729 3. 6.4327. 13.006 4. 32.8968. 31.456

6.  Order the following decimals from least to greatest. 1. 0.055, 0.05, 0.59, 0.05 2. 0.7, 0.732, 0.74, 0.72 3. 0.19, 0.09, 0.9, 0.1

7.  When adding decimals, first arrange the numbers in columns with the decimal points under each other.  Ex. 0.9 + 2.5 + 63.17 =

8. Add. Be sure to write the decimal point in your answer. 1. 5.3 + 6.02 + 0.73 2. $3.75 + $18.90 3. 1.25 + 4.1 + 10.007

9.  When you subtract decimals, arrange the numbers in columns with the decimal points under each other.  Example: 5.25 – 4.7

10.  Subtract. Be sure to write the decimal point in your answer. 1. 23.657 – 9.83 2. $40.99 – $9.99 3. 15.789 – 6.32 4. 102.5 – 1.079

11.  Set up the problem as if you were multiplying whole numbers.  Multiply as if you were multiplying whole numbers.  Count how many numbers are after the decimal points in the problem.  Example: 15.2 x 3.5 =

12.  Multiply. 1. 9.54 x 5.3 2. 5.72 x 6.3 3. 4.8 x 3.2 4. 5.003 x 0.009

13.  Copy the problem as you would for whole numbers. Copy the decimal point directly above in the place for the answer.  Example: 52.26 ÷ 6 =

14.  Divide. 1. 42.75 ÷ 3 2. 74.16 ÷ 6 3. 152.25 ÷ 21

15.  Copy the problem as you would for whole numbers.  You cannot divide by a decimal number.  What you do to the outside – you must do to the inside.  Example: 374.5 ÷ 0.07

16.  Divide. 1. 0.676 ÷ 0.013 2. 70.32 ÷ 0.08 3. $54.60 ÷ 0.84

17.  Write the following fractions as decimals. A. C. B. D.

18. 1. Micah can have his bike fixed for $19.99, or he can buy the new part for his bike and replace it himself for $8.79. How much would he save by fixing his bike himself?

19. 2. Megan buys 5 boxes of cookies for $3.75 each. How much does she spend?

20. 1. Which costs the most per ounce, 60 oz of peanut butter for $5.40, 28 oz for $2.24, or 16 oz for $1.76?

21. 2. Which is the least per pound, 5 lb of chicken for $9.45, 3 lb for $5.97, or 1 lb for $2.05?

22. 1. Troy bought a worm farm and decided to raise worms to make money. The worm farm costs $110.00 initially and came with 200 worms and 500 worm capsules, each containing about 4 baby worms. He figures he can sell the worms to bait shops for $1.25 per dozen. How many dozen worms will he have to sell to begin to make a profit? Worms eat table scraps, so there are no food expenses?