
Multiplying Decimals
Presentation
•
Mathematics
•
5th Grade
•
Hard
Joseph Anderson
FREE Resource
4 Slides • 6 Questions
1
Multiply Decimals Using the Standard Algorithm
2
How to Multiply Decimals
Estimate your answer
Stack the numbers with the longest factor on top- DO NOT LINE UP THE DECIMALS
Ignore the decimals and multiply normally
Underline decimal places in the factors and put the decimal in the product
Use the estimate to check your work!!!!
3
Complete these practice problems
click on the video and complete these problems to practice!!!
4
Practice Problems
Use the standard algorithm to solve each of these problems
Make sure that you make a “smart” estimate first!!
Be careful where you put the decimal!
5
Multiple Choice
What is the best estimate for this number?
2
24
40
10
6
Multiple Choice
What is the exact answer?
24.28
25.28
26.28
27.28
7
Multiple Choice
What is the best estimate for this problem?
72
100
50
16
8
Multiple Choice
What is the best estimate for this problem?
$75
$200
$280
$320
9
Multiple Choice
What is the exact answer to this problem?
279.96
289.96
276.66
73.96
10
Multiple Choice
What is the exact answer to this problem?
16.75
60.00
70.00
75.00
Multiply Decimals Using the Standard Algorithm
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