Mathematics · Number System
Write the number 287.813 in expanded form using powers of 10.
- 12 × 102 + 8 × 101 + 7 × 100 - 8 × 10-1 + 1 × 10-2 + 3 × 10-3
- 22 × 102 + 8 × 101 + 7 × 100 + 8 × 10-1 + 1 × 10-2 + 3 × 103
- 32 × 102 + 8 × 101 + 7 × 100 + 8 × 10-1 + 1 × 10-2 + 3 × 10-3✓
- 42 × 103 + 8 × 102 + 7 × 101 + 8 × 10-1 + 1 × 10-2 + 3 × 10-3
Correct answer
2 × 102 + 8 × 101 + 7 × 100 + 8 × 10-1 + 1 × 10-2 + 3 × 10-3
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