Let's solve the problem step by step.
We are asked to
round each decimal to the nearest whole number. To do this, we follow these rules:
- Look at the
tenths place (the first digit after the decimal point).
- If the tenths digit is
5 or greater, round
up.
- If the tenths digit is
less than 5, round
down.
Let’s go through each one:
---
a. 1.6
Tenths digit = 6 → ≥ 5 → Round up
1.6 →
2
b. 0.6
Tenths digit = 6 → ≥ 5 → Round up
0.6 →
1
c. 4.6
Tenths digit = 6 → ≥ 5 → Round up
4.6 →
5
d. 7.8
Tenths digit = 8 → ≥ 5 → Round up
7.8 →
8
e. 8.3
Tenths digit = 3 → < 5 → Round down
8.3 →
8
f. 2.72
Tenths digit = 7 → ≥ 5 → Round up
2.72 →
3
g. 3.31
Tenths digit = 3 → < 5 → Round down
3.31 →
3
h. 5.61
Tenths digit = 6 → ≥ 5 → Round up
5.61 →
6
i. 8.38
Tenths digit = 3 → < 5 → Round down
8.38 →
8
j. 9.81
Tenths digit = 8 → ≥ 5 → Round up
9.81 →
10
---
✔ Final Answers:
a. 1.6 =
2
b. 0.6 =
1
c. 4.6 =
5
d. 7.8 =
8
e. 8.3 =
8
f. 2.72 =
3
g. 3.31 =
3
h. 5.61 =
6
i. 8.38 =
8
j. 9.81 =
10
---
✔ Explanation Summary:
When rounding to the nearest whole number, only the
first digit after the decimal (tenths) matters. If it's 5 or more, round up; otherwise, round down. The digits after the tenths place (like hundredths) don’t affect the decision in this case.
Parent Tip: Review the logic above to help your child master the concept of rounding decimals to the nearest whole number worksheet.
