1. The document reviews key concepts involving decimals including comparing and ordering decimals, rounding decimals, multiplying and dividing decimals, and estimating calculations with decimals. It also provides examples of word problems involving decimals. 2. Rounding decimals involves finding the rounding place and looking to the right of it to determine if the number rounds up or stays the same, with numbers behind the rounding place becoming zeros in front or behind the decimal. 3. When multiplying decimals, the numbers are lined up and the number of decimal places are counted and used to place the decimal in the answer. When dividing decimals, the decimal is moved to the end of the numbers and divided like whole numbers.

1. Batter up! It’s time to review decimals

2. Today we will review… Comparing Ordering Rounding Multiplying Dividing Estimating Word problems

3. What is a decimal? A decimal is a fractional number and is indicated by digits after a period which is called a decimal point.

4. COMPARING AND ORDERING Line up the decimals. Fill in the empty spaces with zeroes. Compare from the left.

5. Work these! 3.45 _____ .4591 .432 ; .3128 ; .4219 ; 1.2 .562 ; .2891 ; 2.34 ; 2.1

6. ROUNDING!!! Find the rounding place. Look to the right of the rounding place. If the number is five or greater, round up. If the number is less than five, your rounding place stays the same. Numbers behind the rounding place turn to zeroes in FRONT of the decimal. Numbers behind the rounding place fall into the water BEHIND the decimal

7. Work these! Round to the tenths: 3.2678 Round to the hundredths: 125.6728 Round to the ten thousandths: 2.387198

8. MULTIPLYING!!! Line up the numbers. Count the number of digits behind a decimal point Multiply the numbers like you would whole numbers Put the decimal at the end of the answer and move it the number of places you counted in step two.

9. Work these!!! 34.56 x 6.5 8.973 x 7.6

10. DIVISION!!! Move the decimal to the end of the outside number. Move the decimal the same number of places on the inside number. Put the decimal on the roof. Divide like you would with whole numbers. If you have a remainder, add zeroes behind the decimal and continue dividing.

11. Work these!!! Round Quotients to the nearest hundredths! 56.789 ÷ 4.5 2.3866 ÷ .73

12. ESTIMATION!!! Round to the highest place value!! Then work the problem!

13. Work these!! Estimate: 23.57 + 48.9 .341 - .156 .5879 x 1.78

14. Word Problems!! READ IT! PLAN IT! SOLVE IT! CHECK IT!

15. Sarah bought 28 packages of peanuts at $2.38 each. How much did she spend?

16. Trenton’s band made $142.50 playing a gig last week. If there are five members in the band, how much did each member receive?

17. Megan went to the grocery store and bought 3 pounds of apples at $.99 a pound, a box of cereal at $3.21, and two cokes at $1.19 each. If Megan gave the clerk a $20 bill, how much change would she receive?

18. A large cargo plane can carry 87.5 tons. Tanks weighing 4.5 tons are being loaded onto it. What is the maximum number of tanks it can carry?