B.1
덧셈과 뺄셈 어림하기
2분기 (12~2월)백·천·만의 자리까지 반올림하여 합과 차 어림하기
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문제 수
Estimate Sums & Differences
Skill B.1 · Adding & subtracting whole numbers · ★★☆ Medium · Quarter 2
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Score/ 6
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Round each number to the place named, then add or subtract to estimate.
Example
Nearest ten thousand: →
Think: Round each number to the place named, then add or subtract the rounded numbers.
- 1Nearest thousand:
- 2Nearest thousand:
- 3Nearest thousand:
- 4Nearest thousand:
- 5Nearest thousand:
- 6Nearest thousand:
Answer Key
B.1 Estimate Sums & Differences · ★★☆ Medium
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