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GB-38-01-001 · Rounding error intervals

A length L is 45.8 cm correct to 1 decimal place. Write the error interval for L.

Error Intervals: Rounding Booklet p. 63 & p. 64
Method
1) Draw number-line step below and above to find Lower Bound (LB) and Upper Bound (UB)
2) Write in the form LB ≤ L < UB
Worked Example (GB-38-01-001)
45.7 45.8 45.9 LB = 45.75 UB = 45.85
Error Interval: 45.75≤L<45.85\text{Error Interval: } \mathbf{45.75 \le L < 45.85}