C.1
큰 수의 덧셈·뺄셈 어림하기
1분기 (9~11월)네 자리 수를 몇백 또는 몇천으로 반올림한 뒤 더하거나 빼기
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Estimate Sums & Differences
Skill C.1 · Estimation · ★★☆ Medium · Quarter 1
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Score/ 8
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Round each number to the place shown, then estimate.
Example
Nearest thousand: →
Think: Round each number to the place named, then add or subtract the rounded numbers.
- 1Nearest hundred:
- 2Nearest hundred:
- 3Nearest thousand:
- 4Nearest thousand:
- 5Nearest hundred:
- 6Nearest thousand:
- 7Nearest hundred:
- 8Nearest hundred:
Answer Key
C.1 Estimate Sums & Differences · ★★☆ Medium
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