Explanation:
Let’s solve the last part of the worksheet, where we need to round a number represented by counters on a place-value grid.
First, read the number from the grid:
-
Ones column: 2 red counters → 2 ones =
2
-
Tenths column: 4 yellow counters (each = 0.1) → 4 × 0.1 =
0.4
-
Hundredths column: 1 green counter (each = 0.01) → 1 × 0.01 =
0.01
So the full number is:
2 + 0.4 + 0.01 =
2.41
Now, round
2.41:
1.
To the nearest tenth:
- Look at the hundredths digit (the digit after the tenths place).
- In 2.41, the tenths digit is
4, and the hundredths digit is
1.
- If the hundredths digit is
less than 5, we keep the tenths digit the same.
- Since 1 < 5, we round down →
2.4
2.
To the nearest whole number:
- Look at the tenths digit (the first digit after the decimal point).
- In 2.41, the tenths digit is
4.
- If the tenths digit is
less than 5, we round down to the lower whole number.
- Since 4 < 5, we round down →
2
✔ Double-check:
- 2.41 is between 2.4 and 2.5 — closer to 2.4 → correct for nearest tenth.
- 2.41 is between 2 and 3 — closer to 2 (since 2.5 would be midpoint) → correct for nearest whole.
Final Answer:
Rounded to the nearest tenth: 2.4
Rounded to the nearest whole: 2
Parent Tip: Review the logic above to help your child master the concept of rounding decimals to the nearest whole number worksheet.