Of course! Let’s solve each problem step by step. The task is to
identify the decimal number that results when you add a certain number of tenths, hundredths, or thousandths to a given whole number.
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Key Concepts:
-
Tenths = 0.1
-
Hundredths = 0.01
-
Thousandths = 0.001
We’ll convert the “add X tenths/hundredths/thousandths” into decimal form and add it to the original number.
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##
✔ Solutions:
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1) If a number is 7, if we add 5 tenths more then the new number will be?
→ 5 tenths = 5 × 0.1 =
0.5
→ 7 + 0.5 =
7.5
✔ Answer: 7.5
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2) If a number is 12, if we add 3 tenths more then the new number will be?
→ 3 tenths = 3 × 0.1 =
0.3
→ 12 + 0.3 =
12.3
✔ Answer: 12.3
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3) If a number is 47, if we add 8 tenths more then the new number will be?
→ 8 tenths = 8 × 0.1 =
0.8
→ 47 + 0.8 =
47.8
✔ Answer: 47.8
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4) If a number is 9, if we add 2 tenths and 4 hundredths more then the new number will be?
→ 2 tenths = 0.2
→ 4 hundredths = 0.04
→ Total to add = 0.2 + 0.04 =
0.24
→ 9 + 0.24 =
9.24
✔ Answer: 9.24
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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
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6) If a number is 57, 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
→ 57 + 0.29 =
57.29
✔ Answer: 57.29
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7) If a number is 5, 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
→ 5 + 0.254 =
5.254
✔ Answer: 5.254
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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
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9) If a number is 15, 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
→ 15 + 0.325 =
15.325
✔ Answer: 15.325
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10) If a number is 25, if we add 5 hundredths and 4 thousandths more then the new number will be?
→ 5 hundredths = 0.05
→ 4 thousandths = 0.004
→ Total = 0.05 + 0.004 =
0.054
→ 25 + 0.054 =
25.054
✔ Answer: 25.054
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## 📝 Final Answers Summary:
1)
7.5
2)
12.3
3)
47.8
4)
9.24
5)
27.93
6)
57.29
7)
5.254
8)
8.572
9)
15.325
10)
25.054
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Let me know if you’d like a printable version or want to turn this into flashcards for practice! 😊
Parent Tip: Review the logic above to help your child master the concept of place value of decimals worksheet pdf.
