Addition and Subtraction with Regrouping
Flashcard
•
Mathematics
•
4th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is regrouping in addition?
Back
Regrouping in addition is the process of carrying over a value from one column to the next when the sum of a column exceeds 9.
2.
FLASHCARD QUESTION
Front
What is regrouping in subtraction?
Back
Regrouping in subtraction is the process of borrowing from the next column when the top number is smaller than the bottom number in a column.
3.
FLASHCARD QUESTION
Front
Estimate the sum of 578 + 720.
Back
1300
4.
FLASHCARD QUESTION
Front
What is the total of 231 cows and 392 cows when estimated?
Back
About 600 cows.
5.
FLASHCARD QUESTION
Front
Calculate: 600 - 85 = ?
Back
515
6.
FLASHCARD QUESTION
Front
What is the next number in the pattern: 320, 340, 360, 380, 400, ___?
Back
420
7.
FLASHCARD QUESTION
Front
What does it mean to estimate in math?
Back
Estimating means finding a number that is close enough to the right answer, often used for quick calculations.
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