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Objective

Objective. To be able to multiply decimals with whole numbers and decimals. Multiplication Vocabulary – On your whiteboard write _______. 4.5 x 5 22.5. Factor. Factor. product. I decimal. Decimals Represent Fractions. 6 8/10 3/100 6/1000 1/10,000. Tenths.

richard-hartman
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Objective

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  1. Objective To be able to multiply decimals with whole numbers and decimals.

  2. Multiplication Vocabulary – On your whiteboard write _______ 4.5 x 5 22.5 Factor Factor product I decimal

  3. Decimals Represent Fractions 6 8/10 3/100 6/1000 1/10,000 Tenths Hundredths Thousandths Ten thousandths Ones 6 . 8 3 6 1 Notice that every decimal ends with “ths”.

  4. 4.235 4.235 6 6 x x 25 41 0 How to multiply decimals 1 2 Multiply The number of decimal places in the factors is equal to the total number of decimal places in the product. 1 2 3 3 21 . 25 4 1 0 32 1

  5. Copy the problem and place the decimal where it should go 3.2 2 x 5 1 6 . 0

  6. Copy the problem and place the decimal where it should go .32 .32 x 0.5 5 1 6 0 .

  7. Copy the problem and place the decimal where it should go 2.7 7 x 6.1 1 27 +1620 1 6 4 7 .

  8. How many places in would you put the decimal? @.@& X @.$ @ @%@ .

  9. It costs $0.45 to mail a letter and $0.30 to mail a postcard. Carla is going to the post office to mail 3 letters and 1 postcard. How much will she spend?

  10. A car can drive 0.5 mile in one minute. How far can it travel in 4 minutes? 0 0.5 1 1.5 2 2.5 3

  11. A bear weighs 0.4 of a ton. It can walk while holding in its mouth an object weighing 0.5 times as much as its own body weight. What part of a ton can a bear carry?

  12. Your Turn • You will be working in groups of 4 to create a poster. You have 10 minutes. • Gallery Walk • Groups A together, Groups B together • 2 stay and explain, 2 walk the gallery and listen (cycle through all stations on your side 1 minute) • Share with whole class

  13. Objective To be able to multiply decimals with whole numbers and decimals.

  14. Wrap Up • One thing I learned today _____________. • One way you can multiply decimals is_______________.

  15. Ticket out the door • Choose one problem from the worksheet and solve it using one of the representations (money, number line, grid) you explored today.

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