Multiplying
Decimals
QUIZ
or
Review
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review helpful! For more information on how I teach
multiplication of decimals, please see my blog post: here
http://mountainviewteaching.blogspot.com/2012/11/multiplying-decimals.html
Other FREE Quizzes
Multi-Digit Multiplication
http://www.teacherspayteachers.com/Product/FREE-Multi-DigitMultiplication-Quiz-or-Review-and-Answer-Key
Mean, Median, Mode, Range
http://www.teacherspayteachers.com/Product/Mean-Median-ModeRange-FREE-Quiz-and-Answer-Key
Factors, Multiples, Prime, and Composite Numbers
http://www.teacherspayteachers.com/Product/Factors-Multiples-Primeand-Composite-Number-QUIZ
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2012 Teaching With a Mountain View!
Multiplying Decimals
Explain how finding a whole number estimate before your
multiply the decimals can help you make sure your decimal
placement is correct.
Word Problems
1. Clare went to Party City to buy party favors to give out at her
birthday party. She bought 15 erasers, which were .75 each. How
much did the erasers cost altogether?
2. Every week, Darlene spends $46.89 on gas. How much would she
spend on gas over a 5 week period?
3. Michael Phelps can swim the 100m freestyle in 47.51 seconds. If he
swims this same time 8 times in his career, how many seconds would
that be total?
4. Write and solve a word problem that requires you to multiply decimals.
2012 Teaching With a Mountain View!
Multiplying Decimals
Multiplying Decimals
23 x 3.4
6.5 x 9.8
5.6 x .42
79 x .95
Word Problems 2
1. Jeremiah’s pitcher can hold 14.5 ounces of lemonade. If he makes 8
pitchers for his lemonade stand, how many ounces will he have total?
2. Jeremiah made .25 per ounce of lemonade sold. If he sold all of his
lemonade, how much money did he make?
3. Create and solve another problem involving multiplying decimals
Jeremiah and his lemonade stand might have.
2012 Teaching With a Mountain View!
Multiplying Decimals Answer Key
Explain how finding a whole number estimate before your
multiply the decimals can help you make sure your decimal
placement is correct.
When you use a whole number estimate, you get a ballpark
figure to see if your answer is reasonable. For example, if
you are looking at 3.6 x 4.2, the whole number estimate would
be 4 x 4 = 16. When I multiply my decimals, I get 1512, so the
best place for the decimal would be after the 15. = 15.12,
since it is close to my whole number estimate.
Word Problems
1. Clare went to Party City to buy party favors to give out at her
birthday party. She bought 15 erasers, which were .75 each. How
much did the erasers cost altogether?
$11.25
2. Every week, Darlene spends $46.89 on gas. How much would she
spend on gas over a 5 week period?
$234.45
3. Michael Phelps can swim the 100m freestyle in 47.51 seconds. If he
swims this same time 8 times in his career, how many seconds would
that be total?
$380.08
4. Write and solve a word problem that requires you to multiply decimals.
2012 Teaching With a Mountain View!
Multiplying Decimals Answer Key
Multiplying Decimals
23 x 3.4
6.5 x 9.8
78.2
63.7
5.6 x .42
79 x .95
2.352
75.05
Word Problems 2
1. Jeremiah’s pitcher can hold 14.5 ounces of lemonade. If he makes 8
pitchers for his lemonade stand, how many ounces will he have total?
116 ounces
2. Jeremiah made .25 per ounce of lemonade sold. If he sold all of his
lemonade, how much money did he make?
$29
3. Create and solve another problem involving multiplying decimals
Jeremiah and his lemonade stand might have.
2012 Teaching With a Mountain View!