Estimate Decimals
Flashcard
•
Mathematics
•
5th Grade
•
Hard
Standards-aligned
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16 questions
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1.
FLASHCARD QUESTION
Front
What is the process of estimating a subtraction problem using compatible numbers?
Back
To estimate a subtraction problem using compatible numbers, round each number to the nearest whole number or a number that makes the subtraction easier. For example, for 53.87 - 3.56, round to 54 - 4, which equals 50.
2.
FLASHCARD QUESTION
Front
How do you round a number to the nearest tenth?
Back
To round a number to the nearest tenth, look at the digit in the hundredths place. If it is 5 or greater, round up the tenths place by one. If it is less than 5, keep the tenths place the same.
Tags
CCSS.5.NBT.A.4
3.
FLASHCARD QUESTION
Front
What is the estimated sum of 8.21 and 9.88 when rounded to the nearest whole number?
Back
The estimated sum of 8.21 and 9.88 is 18, as 8.21 rounds to 8 and 9.88 rounds to 10.
4.
FLASHCARD QUESTION
Front
How do you round a number to the nearest hundredth?
Back
To round a number to the nearest hundredth, look at the digit in the thousandths place. If it is 5 or greater, round up the hundredths place by one. If it is less than 5, keep the hundredths place the same.
Tags
CCSS.5.NBT.A.4
5.
FLASHCARD QUESTION
Front
What is the estimated difference of 9.22 and 3.88?
Back
The estimated difference of 9.22 and 3.88 is 5, as 9.22 rounds to 9 and 3.88 rounds to 4.
6.
FLASHCARD QUESTION
Front
Define compatible numbers in the context of estimation.
Back
Compatible numbers are numbers that are easy to compute mentally. They are often rounded to make calculations simpler, especially in estimation.
7.
FLASHCARD QUESTION
Front
What is the importance of rounding in estimation?
Back
Rounding is important in estimation because it simplifies calculations, making it easier to quickly find approximate answers without exact calculations.
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