Multiplying Decimals Using Estimation

Flashcard
•
Mathematics
•
5th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is estimation in multiplication?
Back
Estimation in multiplication is a method used to find an approximate answer by rounding numbers to make calculations easier.
2.
FLASHCARD QUESTION
Front
How do you round 12.3 to the nearest whole number?
Back
12.3 rounds to 12.
3.
FLASHCARD QUESTION
Front
How do you round 19.5 to the nearest whole number?
Back
19.5 rounds to 20.
4.
FLASHCARD QUESTION
Front
What is the estimated product of 12.3 and 19.5 using rounding?
Back
The estimated product is 12 x 20 = 240.
5.
FLASHCARD QUESTION
Front
What is the purpose of placing a decimal point in multiplication?
Back
Placing a decimal point correctly ensures the product reflects the value of the original numbers.
6.
FLASHCARD QUESTION
Front
When multiplying 15.22 by 7.3, how many decimal places are in the factors?
Back
There are three decimal places in total (2 from 15.22 and 1 from 7.3).
7.
FLASHCARD QUESTION
Front
How do you determine where to place the decimal point in a product?
Back
Count the total number of decimal places in the factors and place the decimal point in the product accordingly.
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