Let’s solve each part step by step.
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Part I: Round to the nearest tenth (1 decimal place)
Rule: Look at the hundredths digit (second after decimal). If it’s 5 or more, round up the tenths digit. If less than 5, leave tenths digit as is.
A. 5.98 → hundredths = 8 → round up → 6.0
B. 3.71 → hundredths = 1 → keep → 3.7
C. 9.46 → hundredths = 6 → round up → 9.5
D. 4.66 → hundredths = 6 → round up → 4.7
E. 71.608 → hundredths = 0 → keep → 71.6
F. 26.262 → hundredths = 6 → round up → 26.3
✔ Part I Answers:
A. 6.0
B. 3.7
C. 9.5
D. 4.7
E. 71.6
F. 26.3
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Part II: Round to the nearest hundredth (2 decimal places)
Rule: Look at the thousandths digit (third after decimal). If ≥5, round up hundredths. If <5, keep.
A. 4.992 → thousandths = 2 → keep → 4.99
B. 17.346 → thousandths = 6 → round up → 17.35
C. 85.552 → thousandths = 2 → keep → 85.55
D. 61.209 → thousandths = 9 → round up → 61.21
E. 43.771 → thousandths = 1 → keep → 43.77
F. 38.066 → thousandths = 6 → round up → 38.07
✔ Part II Answers:
A. 4.99
B. 17.35
C. 85.55
D. 61.21
E. 43.77
F. 38.07
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Part III: Round to the nearest one (whole number)
Rule: Look at the tenths digit (first after decimal). If ≥5, round up whole number. If <5, keep.
A. 2.31 → tenths = 3 → keep → 2
B. 6.72 → tenths = 7 → round up → 7
C. 12.486 → tenths = 4 → keep → 12
D. 32.916 → tenths = 9 → round up → 33
E. 47.079 → tenths = 0 → keep → 47
F. 79.659 → tenths = 6 → round up → 80
✔ Part III Answers:
A. 2
B. 7
C. 12
D. 33
E. 47
F. 80
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Final Answer:
Part I: A. 6.0, B. 3.7, C. 9.5, D. 4.7, E. 71.6, F. 26.3
Part II: A. 4.99, B. 17.35, C. 85.55, D. 61.21, E. 43.77, F. 38.07
Part III: A. 2, B. 7, C. 12, D. 33, E. 47, F. 80
Parent Tip: Review the logic above to help your child master the concept of 5th grade rounding numbers worksheet.
