Unit 3 Estimating Word Problems
Flashcard
•
Mathematics
•
3rd Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is estimating in math?
Back
Estimating is finding a number that is close enough to the right answer, often by rounding numbers.
2.
FLASHCARD QUESTION
Front
How do you round a number to the nearest hundred?
Back
Look at the tens digit: if it's 5 or more, round up; if it's 4 or less, round down.
3.
FLASHCARD QUESTION
Front
Estimate the sum of 389 and 225 by rounding to the nearest hundred.
Back
About $600.
4.
FLASHCARD QUESTION
Front
What is the purpose of estimating in word problems?
Back
Estimating helps to quickly find an approximate answer without exact calculations.
5.
FLASHCARD QUESTION
Front
How do you find the difference between two numbers when estimating?
Back
Round both numbers to the nearest hundred, then subtract the smaller from the larger.
6.
FLASHCARD QUESTION
Front
Estimate how much closer Lori lives to her grandparents than to her aunt.
Back
About 100 miles.
7.
FLASHCARD QUESTION
Front
What is the estimated total of 334 and 278 when rounded to the nearest hundred?
Back
About 600 cards.
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