Let's solve each problem step by step. The task is to
identify the decimal number after adding a certain amount of tenths, hundredths, or thousandths to a given whole number.
We’ll go through each question one by one, showing how we add decimals correctly based on place value.
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1) If a number is 7, if we add 5 tenths more then the new number will be?
- 5 tenths = 0.5
- 7 + 0.5 =
7.5
✔ Answer:
7.5
---
2) If a number is 12, if we add 3 tenths more then the new number will be?
- 3 tenths = 0.3
- 12 + 0.3 =
12.3
✔ Answer:
12.3
---
3) If a number is 47, if we add 8 tenths more then the new number will be?
- 8 tenths = 0.8
- 47 + 0.8 =
47.8
✔ Answer:
47.8
---
4) If a number is 9, if we add 9 tenths and 4 hundredths more then the new number will be?
- 9 tenths = 0.9
- 4 hundredths = 0.04
- Total added = 0.9 + 0.04 = 0.94
- 9 + 0.94 =
9.94
✔ Answer:
9.94
---
5) If a number is 27, if we add 9 tenths and 3 hundredths more then the new number will be?
- 9 tenths = 0.9
- 3 hundredths = 0.03
- Total = 0.9 + 0.03 = 0.93
- 27 + 0.93 =
27.93
✔ Answer:
27.93
---
6) If a number is 87, if we add 2 tenths and 9 hundredths more then the new number will be?
- 2 tenths = 0.2
- 9 hundredths = 0.09
- Total = 0.2 + 0.09 = 0.29
- 87 + 0.29 =
87.29
✔ Answer:
87.29
---
7) If a number is 3, if we add 2 tenths, 5 hundredths, and 4 thousandths more then the new number will be?
- 2 tenths = 0.2
- 5 hundredths = 0.05
- 4 thousandths = 0.004
- Total = 0.2 + 0.05 + 0.004 = 0.254
- 3 + 0.254 =
3.254
✔ Answer:
3.254
---
8) If a number is 8, if we add 5 tenths, 7 hundredths, and 2 thousandths more then the new number will be?
- 5 tenths = 0.5
- 7 hundredths = 0.07
- 2 thousandths = 0.002
- Total = 0.5 + 0.07 + 0.002 = 0.572
- 8 + 0.572 =
8.572
✔ Answer:
8.572
---
9) If a number is 16, if we add 3 tenths, 2 hundredths, and 5 thousandths more then the new number will be?
- 3 tenths = 0.3
- 2 hundredths = 0.02
- 5 thousandths = 0.005
- Total = 0.3 + 0.02 + 0.005 = 0.325
- 16 + 0.325 =
16.325
✔ Answer:
16.325
---
10) If a number is 25, if we add 6 hundredths and 4 thousandths more then the new number will be?
- 6 hundredths = 0.06
- 4 thousandths = 0.004
- Total = 0.06 + 0.004 = 0.064
- 25 + 0.064 =
25.064
✔ Answer:
25.064
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✔ Final Answers:
1.
7.5
2.
12.3
3.
47.8
4.
9.94
5.
27.93
6.
87.29
7.
3.254
8.
8.572
9.
16.325
10.
25.064
---
🔍 Explanation:
-
Tenths are the first digit after the decimal point (e.g., 0.1).
-
Hundredths are the second digit (e.g., 0.01).
-
Thousandths are the third digit (e.g., 0.001).
- When adding, align the decimal places properly.
- Add the decimal parts together, then add to the original whole number.
This reinforces understanding of
decimal place value and how to manipulate numbers with decimals.
Parent Tip: Review the logic above to help your child master the concept of place value decimals worksheet.
